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Tretiakov PS, Onafowokan OO, Mir JM, Lorentz N, Galetta M, Das A, Shin J, Sciubba D, Krol O, Joujon-Roche R, Williamson T, Imbo B, Yee T, Jankowski PP, Hockley A, Schoenfeld AJ, Passias PG. The Impact of Peri-operative Enhanced Recovery After Surgery Protocols on Outcomes Following Adult Cervical Deformity Surgery. Global Spine J 2024:21925682241249105. [PMID: 38647538 DOI: 10.1177/21925682241249105] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 04/25/2024] Open
Abstract
STUDY DESIGN Retrospective cohort study. OBJECTIVES To assess the impact of Enhanced recovery after surgery (ERAS) protocols on peri-operative course in adult cervical deformity (ACD) corrective surgery. METHODS Patients ≥18 yrs with complete pre-(BL) and up to 2-year (2Y) radiographic and clinical outcome data were stratified by enrollment in an ERAS protocol that commenced in 2020. Differences in demographics, clinical outcomes, radiographic alignment targets, peri-operative factors and complication rates were assessed via means comparison analysis. Logistic regression analysed differences while controlling for baseline disability and deformity. RESULTS We included 220 patients (average age 58.1 ± 11.9 years, 48% female). 20% were treated using the ERAS protocol (ERAS+). Disability was similar between both groups at baseline. When controlling for baseline disability and myelopathy, ERAS- patients were more likely to utilize opioids than ERAS+ (OR 1.79, 95% CI: 1.45-2.50, P = .016). Peri-operatively, ERAS+ had significantly lower operative time (P < .021), lower EBL (583.48 vs 246.51, P < .001), and required significantly lower doses of propofol intra-operatively than ERAS- patients (P = .020). ERAS+ patients also reported lower mean LOS overall (4.33 vs 5.84, P = .393), and were more likely to be discharged directly to home (χ2(1) = 4.974, P = .028). ERAS+ patients were less likely to require steroids after surgery (P = .045), were less likely to develop neuromuscular complications overall (P = .025), and less likely experience venous complications or be diagnosed with venous disease post-operatively (P = .025). CONCLUSIONS Enhanced recovery after surgery programs in ACD surgery demonstrate significant benefit in terms of peri-operative outcomes for patients.
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Affiliation(s)
- Peter S Tretiakov
- Departments of Orthopedic and Neurological Surgery, NYU Langone Orthopedic Hospital; New York Spine Institute, New York, NY, USA
| | - Oluwatobi O Onafowokan
- Departments of Orthopedic and Neurological Surgery, NYU Langone Orthopedic Hospital; New York Spine Institute, New York, NY, USA
| | - Jamshaid M Mir
- Departments of Orthopedic and Neurological Surgery, NYU Langone Orthopedic Hospital; New York Spine Institute, New York, NY, USA
| | - Nathan Lorentz
- Departments of Orthopedic and Neurological Surgery, NYU Langone Orthopedic Hospital; New York Spine Institute, New York, NY, USA
| | - Matthew Galetta
- Departments of Orthopedic and Neurological Surgery, NYU Langone Orthopedic Hospital; New York Spine Institute, New York, NY, USA
| | - Ankita Das
- Departments of Orthopedic and Neurological Surgery, NYU Langone Orthopedic Hospital; New York Spine Institute, New York, NY, USA
| | - John Shin
- Department of Neurosurgery, Massachusetts General Hospitals, Boston MA, USA
| | - Daniel Sciubba
- Department of Neurosurgery, Northwell Health, New York, NY, USA
| | - Oscar Krol
- Departments of Orthopedic and Neurological Surgery, NYU Langone Orthopedic Hospital; New York Spine Institute, New York, NY, USA
| | - Rachel Joujon-Roche
- Departments of Orthopedic and Neurological Surgery, NYU Langone Orthopedic Hospital; New York Spine Institute, New York, NY, USA
| | - Tyler Williamson
- Departments of Orthopedic and Neurological Surgery, NYU Langone Orthopedic Hospital; New York Spine Institute, New York, NY, USA
| | - Bailey Imbo
- Departments of Orthopedic and Neurological Surgery, NYU Langone Orthopedic Hospital; New York Spine Institute, New York, NY, USA
| | - Timothy Yee
- Department of Neurosurgery, University of California San Francisco, CA, USA
| | - Pawel P Jankowski
- Department of Neurosurgery, Hoag Neurosciences Institute, Irvine, CA, USA
| | - Aaron Hockley
- Department of Neurosurgery, University of Alberta, Edmonton, AL, Canada
| | - Andrew J Schoenfeld
- Department of Orthopaedic Surgery, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA
| | - Peter G Passias
- Departments of Orthopedic and Neurological Surgery, NYU Langone Orthopedic Hospital; New York Spine Institute, New York, NY, USA
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Passias PG, Tretiakov PS, Das A, Thomas Z, Krol O, Joujon-Roche R, Williamson T, Imbo B, Owusu-Sarpong S, Lebovic J, Diebo B, Vira S, Lafage V, Schoenfeld AJ. Outcomes and survival analysis of adult cervical deformity patients with 10-year follow-up. Spine J 2024; 24:488-495. [PMID: 37918570 DOI: 10.1016/j.spinee.2023.10.016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/15/2022] [Revised: 09/28/2023] [Accepted: 10/26/2023] [Indexed: 11/04/2023]
Abstract
BACKGROUND Previous studies have demonstrated that adult cervical deformity patients may be at increased risk of death in conjunction with increased frailty or a weakened physiologic state. However, such studies have often been limited by follow-up duration, and longer-term studies are needed to better assess temporal changes in ACD patients and associated mortality risk. PURPOSE To assess if patients with decreased comorbidities and physiologic burden will be at lessened risk of death for a greater length of time after undergoing adult cervical deformity surgery. STUDY DESIGN/SETTING Retrospective review. PATIENT SAMPLE Two hundred ninety ACD patients. OUTCOME MEASURES Morbidity and mortality data. METHODS Operative ACD patients ≥18 years with pre-(BL) and 10-year (10Y) data were included. Patients were stratified as expired versus living, as well as temporally grouped by Expiration prior to 5Y or between 5Y and 10Y. Group differences were assessed via means comparison analysis. Backstep logistic regression identified mortality predictors. Kaplan-Meier analysis assessed survivorship of expired patients. Log rank analysis determined differences in survival distribution groups. RESULTS Sixty-six total patients were included (60.97±10.19 years, 48% female, 28.03±7.28 kg/m2). Within 10Y, 12 (18.2% of ACD cohort) expired. At baseline, patients were comparable in age, gender, BMI, and CCI total on average (all p>.05). Furthermore, patients were comparable in BL HRQLs (all p>.05). However, patients who expired between 5Y and 10Y demonstrated higher BL EQ5D and mJOA scores than their earlier expired counterparts at 2Y (p<.021). Furthermore, patients who presented with no CCI markers at BL were significantly more likely to survive until the 5Y-10Y follow-up window. Surgically, the only differences observed between patients who survived until 5Y was in undergoing osteotomy, with longer survival seen in those who did not require it (p=.003). Logistic regression revealed independent predictors of death prior to 5Y to be increased BMI, increased frailty, and increased levels fused (model p<.001). KM analysis found that by Passias et al frailty, not frail patients had mean survival time of 170.56 weeks, versus 158.00 in frail patients (p=.949). CONCLUSIONS Our study demonstrates that long-term survival after cervical deformity surgery may be predicted by baseline surgical factors. By optimizing BMI, frailty status, and minimizing fusion length when appropriate, surgeons may be able to further assist ACD patients in increasing their survivability postoperatively.
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Affiliation(s)
- Peter G Passias
- Departments of Orthopedic and Neurological Surgery, NYU Langone Orthopedic Hospital; New York Spine Institute, 301 East 17th St, New York, NY 10003, USA.
| | - Peter S Tretiakov
- Departments of Orthopedic and Neurological Surgery, NYU Langone Orthopedic Hospital; New York Spine Institute, 301 East 17th St, New York, NY 10003, USA
| | - Ankita Das
- Departments of Orthopedic and Neurological Surgery, NYU Langone Orthopedic Hospital; New York Spine Institute, 301 East 17th St, New York, NY 10003, USA
| | - Zach Thomas
- New York Medical College, Westchester Medical Center, 40 Sunshine Cottage Road, Valhalla, NY 10595, USA
| | - Oscar Krol
- Departments of Orthopedic and Neurological Surgery, NYU Langone Orthopedic Hospital; New York Spine Institute, 301 East 17th St, New York, NY 10003, USA
| | - Rachel Joujon-Roche
- Departments of Orthopedic and Neurological Surgery, NYU Langone Orthopedic Hospital; New York Spine Institute, 301 East 17th St, New York, NY 10003, USA
| | - Tyler Williamson
- Departments of Orthopedic and Neurological Surgery, NYU Langone Orthopedic Hospital; New York Spine Institute, 301 East 17th St, New York, NY 10003, USA
| | - Bailey Imbo
- Departments of Orthopedic and Neurological Surgery, NYU Langone Orthopedic Hospital; New York Spine Institute, 301 East 17th St, New York, NY 10003, USA
| | - Stephane Owusu-Sarpong
- Departments of Orthopedic and Neurological Surgery, NYU Langone Orthopedic Hospital; New York Spine Institute, 301 East 17th St, New York, NY 10003, USA
| | - Jordan Lebovic
- Departments of Orthopedic and Neurological Surgery, NYU Langone Orthopedic Hospital; New York Spine Institute, 301 East 17th St, New York, NY 10003, USA
| | - Bassel Diebo
- Department of Orthopedic Surgery, Warren Alpert Medical School at Brown University, 222 Richmond St, Providence, RI 02903, USA
| | - Shaleen Vira
- Department of Orthopaedic Surgery, UT Southwestern Medical Center, 5323 Harry Hines Blvd, Dallas, TX 75390, USA
| | - Virginie Lafage
- Lenox Hill Hospital, Northwell Health, Department of Orthopaedics, 130 E 77th St 7th Floor, New York, NY 10075, USA
| | - Andrew J Schoenfeld
- Department of Orthopedic Surgery, Brigham and Women's Center for Surgery and Public Health, 75 Francis Street, Boston, MA 02115, USA
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Jackson-Fowl B, Hockley A, Naessig S, Ahmad W, Pierce K, Smith JS, Ames C, Shaffrey C, Bennett-Caso C, Williamson TK, McFarland K, Passias PG. Adult cervical spine deformity: a state-of-the-art review. Spine Deform 2024; 12:3-23. [PMID: 37776420 DOI: 10.1007/s43390-023-00735-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/27/2020] [Accepted: 07/01/2023] [Indexed: 10/02/2023]
Abstract
Adult cervical deformity is a structural malalignment of the cervical spine that may present with variety of significant symptomatology for patients. There are clear and substantial negative impacts of cervical spine deformity, including the increased burden of pain, limited mobility and functionality, and interference with patients' ability to work and perform everyday tasks. Primary cervical deformities develop as the result of a multitude of different etiologies, changing the normal mechanics and structure of the cervical region. In particular, degeneration of the cervical spine, inflammatory arthritides and neuromuscular changes are significant players in the development of disease. Additionally, cervical deformities, sometimes iatrogenically, may present secondary to malalignment or correction of the thoracic, lumbar or sacropelvic spine. Previously, classification systems were developed to help quantify disease burden and influence management of thoracic and lumbar spine deformities. Following up on these works and based on the relationship between the cervical and distal spine, Ames-ISSG developed a framework for a standardized tool for characterizing and quantifying cervical spine deformities. When surgical intervention is required to correct a cervical deformity, there are advantages and disadvantages to both anterior and posterior approaches. A stepwise approach may minimize the drawbacks of either an anterior or posterior approach alone, and patients should have a surgical plan tailored specifically to their cervical deformity based upon symptomatic and radiographic indications. This state-of-the-art review is based upon a comprehensive overview of literature seeking to highlight the normal cervical spine, etiologies of cervical deformity, current classification systems, and key surgical techniques.
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Affiliation(s)
- Brendan Jackson-Fowl
- Division of Spinal Surgery/Departments of Orthopaedic and Neurosurgery, NYU Medical Center, NY Spine Institute, 301 East 17th St, New York, NY, 10003, USA
| | - Aaron Hockley
- Department of Neurosurgery, University of Alberta, Edmonton, AB, USA
| | - Sara Naessig
- Division of Spinal Surgery/Departments of Orthopaedic and Neurosurgery, NYU Medical Center, NY Spine Institute, 301 East 17th St, New York, NY, 10003, USA
| | - Waleed Ahmad
- Division of Spinal Surgery/Departments of Orthopaedic and Neurosurgery, NYU Medical Center, NY Spine Institute, 301 East 17th St, New York, NY, 10003, USA
| | - Katherine Pierce
- Division of Spinal Surgery/Departments of Orthopaedic and Neurosurgery, NYU Medical Center, NY Spine Institute, 301 East 17th St, New York, NY, 10003, USA
| | - Justin S Smith
- Department of Neurosurgery, University of Virginia Medical Center, Charlottesville, VA, USA
| | - Christopher Ames
- Department of Neurological Surgery, University of California, San Francisco, San Francisco, CA, USA
| | - Christopher Shaffrey
- Department of Neurosurgery, University of Virginia Medical Center, Charlottesville, VA, USA
| | - Claudia Bennett-Caso
- Division of Spinal Surgery/Departments of Orthopaedic and Neurosurgery, NYU Medical Center, NY Spine Institute, 301 East 17th St, New York, NY, 10003, USA
| | - Tyler K Williamson
- Division of Spinal Surgery/Departments of Orthopaedic and Neurosurgery, NYU Medical Center, NY Spine Institute, 301 East 17th St, New York, NY, 10003, USA
| | - Kimberly McFarland
- Division of Spinal Surgery/Departments of Orthopaedic and Neurosurgery, NYU Medical Center, NY Spine Institute, 301 East 17th St, New York, NY, 10003, USA
| | - Peter G Passias
- Division of Spinal Surgery/Departments of Orthopaedic and Neurosurgery, NYU Medical Center, NY Spine Institute, 301 East 17th St, New York, NY, 10003, USA.
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Shima K, Shimizu T, Fujibayashi S, Murata K, Matsuda S, Otsuki B. Feasibility of total and partial uncinectomy during anterior cervical approach: MRI-based analysis of 176 patients regarding vertebral artery location. EUROPEAN SPINE JOURNAL : OFFICIAL PUBLICATION OF THE EUROPEAN SPINE SOCIETY, THE EUROPEAN SPINAL DEFORMITY SOCIETY, AND THE EUROPEAN SECTION OF THE CERVICAL SPINE RESEARCH SOCIETY 2023; 32:3540-3546. [PMID: 37634197 DOI: 10.1007/s00586-023-07888-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/22/2023] [Revised: 07/12/2023] [Accepted: 08/06/2023] [Indexed: 08/29/2023]
Abstract
PURPOSE To determine the technical feasibility of uncinate process (UP) resection (uncinectomy) during anterior cervical approach with risk-avoidance of vertebral artery (VA) injury. METHODS One hundred and seventy-six magnetic resonance imaging images with cervical spondylosis were evaluated. The diameter between UP and VA (UP-VA distance), the presence of a fat plane, and the VA's anterior-posterior position relative to UP (anterior[A], middle[M], posterior[P]) at C3-4 to C6-7 segments were investigated. Subsequently, easy-to-use classifications were developed according to the feasibility of total and partial uncinectomy. Total uncinectomy: easy (distance: > 2 mm); moderate (distance: ≤ 2 and fat plane: +); advanced (no fat plane). Partial uncinectomy: easy (distance: > 2 mm and P, A, or M position); moderate (distance: ≤ 2; fat plane: + and P position), and advanced (no fat plane and P position). RESULTS UP-VA distance of C5-6 on the right side (left/right: 0.41/0.31 mm) was the smallest. The ratio of no fat plane of C5-6 (46.6%/49.4%) was the highest. C5-6 had a high rate of P position (7.4%/8.5%) while C6-7 had a high rate of A position (19.3%/18.2%). More than 90% individuals were classified as easy for partial uncinectomy at any vertebral segment (C3-7), while more than 30% were classified as advanced at C4-7 with the highest rate at C5-6 for total uncinectomy. CONCLUSION When performing uncinectomy during the anterior cervical approach, the C5-6 segment may be at the greatest risk of VA injury. Hence, preoperative MR images should be thoroughly evaluated to avoid VA injury.
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Affiliation(s)
- Koichiro Shima
- Department of Orthopaedic Surgery, Graduate School of Medicine, Kyoto University, Shogoin, Kawahara-Cho 54, Sakyo-Ku, Kyoto, 606-8507, Japan.
| | - Takayoshi Shimizu
- Department of Orthopaedic Surgery, Graduate School of Medicine, Kyoto University, Shogoin, Kawahara-Cho 54, Sakyo-Ku, Kyoto, 606-8507, Japan
| | - Shunsuke Fujibayashi
- Department of Orthopaedic Surgery, Graduate School of Medicine, Kyoto University, Shogoin, Kawahara-Cho 54, Sakyo-Ku, Kyoto, 606-8507, Japan
| | - Koichi Murata
- Department of Orthopaedic Surgery, Graduate School of Medicine, Kyoto University, Shogoin, Kawahara-Cho 54, Sakyo-Ku, Kyoto, 606-8507, Japan
| | - Shuichi Matsuda
- Department of Orthopaedic Surgery, Graduate School of Medicine, Kyoto University, Shogoin, Kawahara-Cho 54, Sakyo-Ku, Kyoto, 606-8507, Japan
| | - Bungo Otsuki
- Department of Orthopaedic Surgery, Graduate School of Medicine, Kyoto University, Shogoin, Kawahara-Cho 54, Sakyo-Ku, Kyoto, 606-8507, Japan
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Ma S, Zhou Z, Ge Z, Wang Y, Wan W, Zhou R, Cao K. A novel classification of osteotomized debridement based on the range of focus in treating active thoracolumbar tuberculosis: a multicenter study. Arch Orthop Trauma Surg 2023; 143:5565-5574. [PMID: 37029795 DOI: 10.1007/s00402-023-04869-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/10/2022] [Accepted: 04/02/2023] [Indexed: 04/09/2023]
Abstract
INTRODUCTION Osteotomized debridement (OD) is increasingly used in the treatment of active thoracolumbar tuberculosis (TB). So far, no nomenclature has been established to describe the patterns of OD, and thus the surgical outcomes cannot be directly analyzed and compared among the patients treated with different extents of OD. The purpose of this study was to establish a reliable classification of OD for further study of spinal TB. MATERIALS AND METHODS This was a multicenter retrospective study. The proposed classification included 6 grades of OD based on sagittal range of vertebral body destruction: grade 0 involves single-level intervertebral disc and adjacent superficial endplates; grade 1 involves adjacent endplates and vertebral bodies, but no pedicle is involved; grade 2 involves adjacent endplates, vertebral bodies, and a lower or upper pedicle; grade 3 involves adjacent endplates, vertebral bodies, and both of lower and upper pedicles; grade 4 involves an entire vertebral body and an adjacent lower or upper pedicle; grade 5 involves two continuous entire vertebral bodies. Two hundred and five patients with active thoracolumbar TB who underwent OD surgery were included, and all ODs were classified. The reliability of this classification was evaluated twice by 10 readers, and Fleiss kappa coefficients were calculated. RESULTS In the 205 patients, 208 ODs were performed. Grade 2 OD was the commonest type (98/208, 47.1%), followed by grade 1 (50/208, 24.0%), grade 3 (26/208, 12.5%), grade 0 (20/208, 9.6%), grade 4 (8/208, 3.8%), and grade 5 (6/208, 2.9%). The average accuracy of the two readings was 86.2% and 90.1%, respectively. The intra-rater reliability for the classification was "almost perfect agreement" with a Fleiss kappa coefficient average of 0.92. The inter-rater reliability was "almost perfect agreement" with a coefficient average of 0.89 for two readings. CONCLUSIONS This classification proved to be intuitive and reliable. The graded OD provides a platform for preoperative evaluation and allows comparative analysis of clinical outcomes in different extents of OD.
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Affiliation(s)
- Shengbiao Ma
- The Orthopedic Hospital, The First Affiliated Hospital of Nanchang University, #1519 Dongyue Avenue, Nanchang, 330209, Jiangxi, China
| | - Zhenhai Zhou
- The Orthopedic Hospital, The First Affiliated Hospital of Nanchang University, #1519 Dongyue Avenue, Nanchang, 330209, Jiangxi, China
| | - Zhaohui Ge
- Department of Orthopedics, General Hospital of Ningxia Medical University, Ningxia, China
| | - Yingsong Wang
- Department of Orthopedics, The Second Affiliated Hospital of Kunming Medical University, Kunming, China
| | - Wenbing Wan
- Department of Orthopedics, The Second Affiliated Hospital of Nanchang University, Nanchang, China
| | - Rongping Zhou
- The Orthopedic Hospital, The First Affiliated Hospital of Nanchang University, #1519 Dongyue Avenue, Nanchang, 330209, Jiangxi, China
| | - Kai Cao
- The Orthopedic Hospital, The First Affiliated Hospital of Nanchang University, #1519 Dongyue Avenue, Nanchang, 330209, Jiangxi, China.
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Shahrestani S, Ton A, Brown NJ, Pennington Z, Loya JJ, Kuo C, Mehkri Y, Gendreau J, Diaz-Aguilar LD, Pham MH, Blaskiewicz D. Radiographic Outcomes Following ACDF With Hyperlordotic Implants to Achieve Cervical Anterior Column Realignment. World Neurosurg 2023; 174:e1-e7. [PMID: 36396055 DOI: 10.1016/j.wneu.2022.11.041] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2022] [Accepted: 11/10/2022] [Indexed: 11/16/2022]
Abstract
BACKGROUND Degenerative disc disease and progressive sagittal malalignment can both contribute to degenerative cervical myelopathy and radiculopathy. For patients with symptoms refractory to conservative management, anterior cervical discectomy and fusion (ACDF) is a thoroughly vetted intervention shown to improve pain and disability measures. Hyperlordotic implants can also help restore cervical sagittal balance through anterior column realignment (ACR). METHODS A consecutive bi-institutional series of patients who underwent ACDF with hyperlordotic polyetheretherketone (PEEK) implants between 2014 and 2016 was reviewed. All included patients underwent ACDF between C3 and C7 inclusive of a hyperlordotic PEEK cervical implant (>10° lordosis), and had ≥12 months of radiographic follow-up. Lateral radiographs were analyzed to compare pre- and postoperative cervical parameters. RESULTS Forty-six patients were included (mean age, 58.0 years; male, 35%). Mean body mass index was 28.3 kg/m2, and mean radiographic follow-up 14.4 months. Overall, cervical lordosis increased from -7.8° preoperatively to -14.8° postoperatively and to -15.7° at last follow-up (P < 0.001). Additionally, the mean segmental lordosis of ACR levels treated increased from -0.2° preoperatively to -4.8° postoperatively (P < 0.001), but no significant change was observed at last follow-up. Lastly, improvement in segmental lordosis was seen at both postoperative time points at the C3-C4 (P = 0.002 and P = 0.005, respectively), C4-C5 (P < 0.001 and P < 0.001, respectively), and C5-C6 levels (P < 0.001 and P < 0.001, respectively). CONCLUSIONS Our study demonstrates that hyperlordotic PEEK implants used for ACR effectively contribute to restoration of cervical lordosis in patients undergoing ACDF, potentially reducing the need for additional posterior surgery.
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Affiliation(s)
- Shane Shahrestani
- Keck School of Medicine, University of Southern California, Los Angeles, California, USA
| | - Andy Ton
- Keck School of Medicine, University of Southern California, Los Angeles, California, USA
| | - Nolan J Brown
- Department of Neurological Surgery, University of California, Irvine, Orange, California, USA
| | - Zach Pennington
- Department of Neurological Surgery, Mayo Clinic, Rochester, Minnesota, USA
| | - Joshua J Loya
- Department of Neurosurgery, Oregon Health and Sciences University, Portland, Oregon, USA
| | - Cathleen Kuo
- Department of Neurosurgery, University at Buffalo College of Medicine, Buffalo, New York, USA
| | - Yusuf Mehkri
- Department of Neurosurgery, University of Florida, Gainesville, Florida, USA
| | - Julian Gendreau
- Johns Hopkins Whiting School of Engineering, Baltimore, Maryland, USA
| | | | - Martin H Pham
- Department of Neurosurgery, University of California, San Diego, California, USA
| | - Donald Blaskiewicz
- Department of Neurosurgery, University of California, San Diego, California, USA.
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Louie PK, Sheikh Alshabab B, McCarthy MH, Virk S, Dowdell JE, Steinhaus ME, Lovecchio F, Samuel AM, Morse KW, Schwab FJ, Albert TJ, Qureshi SA, Iyer S, Katsuura Y, Huang RC, Cunningham ME, Yao YC, Weissmann K, Lafage R, Lafage V, Kim HJ. Classification system for cervical spine deformity morphology: a validation study. J Neurosurg Spine 2022; 37:865-873. [PMID: 35901688 DOI: 10.3171/2022.5.spine211537] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2021] [Accepted: 05/16/2022] [Indexed: 11/06/2022]
Abstract
OBJECTIVE The objective of this study was to initially validate a recent morphological classification of cervical spine deformity pathology. METHODS The records of 10 patients for each of the 3 classification subgroups (flat neck, focal deformity, and cervicothoracic), as well as for 8 patients with coronal deformity only, were extracted from a prospective multicenter database of patients with cervical deformity (CD). A panel of 15 physicians of various training and professional levels (i.e., residents, fellows, and surgeons) categorized each patient into one of the 4 groups. The Fleiss kappa coefficient was utilized to evaluate intra- and interrater reliability. Accuracy, defined as properly selecting the main driver of deformity, was reported overall, by morphotype, and by reviewer experience. RESULTS The overall classification demonstrated a moderate to substantial agreement (round 1: interrater Fleiss kappa = 0.563, 95% CI 0.559-0.568; round 2: interrater Fleiss kappa = 0.612, 95% CI 0.606-0.619). Stratification by level of training demonstrated similar mean interrater coefficients (residents 0.547, fellows 0.600, surgeons 0.524). The mean intrarater score was 0.686 (range 0.531-0.823). A substantial agreement between rounds 1 and 2 was demonstrated in 81.8% of the raters, with a kappa score > 0.61. Stratification by level of training demonstrated similar mean intrarater coefficients (residents 0.715, fellows 0.640, surgeons 0.682). Of 570 possible questions, reviewers provided 419 correct answers (73.5%). When considering the true answer as being selected by at least one of the two main drivers of deformity, the overall accuracy increased to 86.0%. CONCLUSIONS This initial validation of a CD morphological classification system reiterates the importance of dynamic plain radiographs for the evaluation of patients with CD. The overall reliability of this CD morphological classification has been demonstrated. The overall accuracy of the classification system was not impacted by rater experience, demonstrating its simplicity.
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Affiliation(s)
- Philip K Louie
- 1Department of Orthopaedic Surgery, Hospital for Special Surgery, New York, New York.,2Department of Neurosurgery, Center for Neurosciences and Spine, Virginia Mason Franciscan Health, Seattle, Washington
| | - Basel Sheikh Alshabab
- 1Department of Orthopaedic Surgery, Hospital for Special Surgery, New York, New York
| | - Michael H McCarthy
- 1Department of Orthopaedic Surgery, Hospital for Special Surgery, New York, New York.,3Department of Orthopaedic Surgery, Indiana Spine Group, University of Indiana, Carmel, Indiana
| | - Sohrab Virk
- 1Department of Orthopaedic Surgery, Hospital for Special Surgery, New York, New York.,4Department of Orthopaedic Surgery, Northwell Health, New Hyde Park, New York
| | - James E Dowdell
- 1Department of Orthopaedic Surgery, Hospital for Special Surgery, New York, New York
| | - Michael E Steinhaus
- 1Department of Orthopaedic Surgery, Hospital for Special Surgery, New York, New York.,5Spine Institute, MountainStar Healthcare, Murray, Utah
| | - Francis Lovecchio
- 1Department of Orthopaedic Surgery, Hospital for Special Surgery, New York, New York
| | - Andre M Samuel
- 1Department of Orthopaedic Surgery, Hospital for Special Surgery, New York, New York
| | - Kyle W Morse
- 1Department of Orthopaedic Surgery, Hospital for Special Surgery, New York, New York
| | - Frank J Schwab
- 1Department of Orthopaedic Surgery, Hospital for Special Surgery, New York, New York.,4Department of Orthopaedic Surgery, Northwell Health, New Hyde Park, New York
| | - Todd J Albert
- 1Department of Orthopaedic Surgery, Hospital for Special Surgery, New York, New York
| | - Sheeraz A Qureshi
- 1Department of Orthopaedic Surgery, Hospital for Special Surgery, New York, New York
| | - Sravisht Iyer
- 1Department of Orthopaedic Surgery, Hospital for Special Surgery, New York, New York
| | - Yoshihiro Katsuura
- 1Department of Orthopaedic Surgery, Hospital for Special Surgery, New York, New York.,6Department of Orthopedics, Adventist Health, Willits, California
| | - Russel C Huang
- 1Department of Orthopaedic Surgery, Hospital for Special Surgery, New York, New York
| | - Matthew E Cunningham
- 1Department of Orthopaedic Surgery, Hospital for Special Surgery, New York, New York
| | - Yu-Cheng Yao
- 1Department of Orthopaedic Surgery, Hospital for Special Surgery, New York, New York.,7Department of Orthopedics, Taipei Veterans General Hospital, Taipei, Taiwan; and
| | - Karen Weissmann
- 1Department of Orthopaedic Surgery, Hospital for Special Surgery, New York, New York.,8Department of Orthopedics and Traumatology, University of Chile, Santiago, Chile
| | - Renaud Lafage
- 1Department of Orthopaedic Surgery, Hospital for Special Surgery, New York, New York.,4Department of Orthopaedic Surgery, Northwell Health, New Hyde Park, New York
| | - Virginie Lafage
- 1Department of Orthopaedic Surgery, Hospital for Special Surgery, New York, New York.,4Department of Orthopaedic Surgery, Northwell Health, New Hyde Park, New York
| | - Han Jo Kim
- 1Department of Orthopaedic Surgery, Hospital for Special Surgery, New York, New York
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8
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Elias E, Bess S, Line BG, Lafage V, Lafage R, Klineberg E, Kim HJ, Passias P, Nasser Z, Gum JL, Kebaish K, Eastlack R, Daniels AH, Mundis G, Hostin R, Protopsaltis TS, Soroceanu A, Hamilton DK, Kelly MP, Gupta M, Hart R, Schwab FJ, Burton D, Ames CP, Shaffrey CI, Smith JS. Operative treatment outcomes for adult cervical deformity: a prospective multicenter assessment with mean 3-year follow-up. J Neurosurg Spine 2022; 37:855-864. [PMID: 35901674 DOI: 10.3171/2022.6.spine22422] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2022] [Accepted: 06/01/2022] [Indexed: 11/06/2022]
Abstract
OBJECTIVE Adult cervical deformity (ACD) has high complication rates due to surgical complexity and patient frailty. Very few studies have focused on longer-term outcomes of operative ACD treatment. The objective of this study was to assess minimum 2-year outcomes and complications of ACD surgery. METHODS A multicenter, prospective observational study was performed at 13 centers across the United States to evaluate surgical outcomes for ACD. Demographics, complications, radiographic parameters, and patient-reported outcome measures (PROMs; Neck Disability Index, modified Japanese Orthopaedic Association, EuroQol-5D [EQ-5D], and numeric rating scale [NRS] for neck and back pain) were evaluated, and analyses focused on patients with ≥ 2-year follow-up. RESULTS Of 169 patients with ACD who were eligible for the study, 102 (60.4%) had a minimum 2-year follow-up (mean 3.4 years, range 2-8.1 years). The mean age at surgery was 62 years (SD 11 years). Surgical approaches included anterior-only (22.8%), posterior-only (39.6%), and combined (37.6%). PROMs significantly improved from baseline to last follow-up, including Neck Disability Index (from 47.3 to 33.0) and modified Japanese Orthopaedic Association score (from 12.0 to 12.8; for patients with baseline score ≤ 14), neck pain NRS (from 6.8 to 3.8), back pain NRS (from 5.5 to 4.8), EQ-5D score (from 0.74 to 0.78), and EQ-5D visual analog scale score (from 59.5 to 66.6) (all p ≤ 0.04). More than half of the patients (n = 58, 56.9%) had at least one complication, with the most common complications including dysphagia, distal junctional kyphosis, instrumentation failure, and cardiopulmonary events. The patients who did not achieve 2-year follow-up (n = 67) were similar to study patients based on baseline demographics, comorbidities, and PROMs. Over the course of follow-up, 23 of the total 169 enrolled patients were reported to have died. Notably, these represent all-cause mortalities during the course of follow-up. CONCLUSIONS This multicenter, prospective analysis demonstrates that operative treatment for ACD provides significant improvement of health-related quality of life at a mean 3.4-year follow-up, despite high complication rates and a high rate of all-cause mortality that is reflective of the overall frailty of this patient population. To the authors' knowledge, this study represents the largest and most comprehensive prospective effort to date designed to assess the intermediate-term outcomes and complications of operative treatment for ACD.
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Affiliation(s)
- Elias Elias
- 1Department of Neurosurgery, University of Virginia, Charlottesville, Virginia
| | - Shay Bess
- 2Presbyterian St. Luke's Medical Center, Denver, Colorado
| | - Breton G Line
- 2Presbyterian St. Luke's Medical Center, Denver, Colorado
| | - Virginie Lafage
- 3Department of Orthopedic Surgery, Lennox Hill Hospital, New York, New York
| | - Renaud Lafage
- 4Department of Orthopaedic Surgery, Hospital for Special Surgery, New York, New York
| | - Eric Klineberg
- 5Department of Orthopaedic Surgery, University of California, Davis, Sacramento, California
| | - Han Jo Kim
- 4Department of Orthopaedic Surgery, Hospital for Special Surgery, New York, New York
| | - Peter Passias
- 6Department of Orthopaedic Surgery, NYU Hospital for Joint Diseases, New York, New York
| | - Zeina Nasser
- 7Neuroscience Research Center, Faculty of Medical Sciences, Lebanese University, Hadath, Lebanon
| | | | - Khaled Kebaish
- 9Department of Orthopedic Surgery, Johns Hopkins Hospital, Baltimore, Maryland
| | | | - Alan H Daniels
- 11Department of Orthopedic Surgery, Brown University, Providence, Rhode Island
| | | | - Richard Hostin
- 12Department of Orthopaedic Surgery, Baylor Scoliosis Center, Plano, Texas
| | | | - Alex Soroceanu
- 13Department of Orthopedic Surgery, University of Calgary, Alberta, Canada
| | - D Kojo Hamilton
- 14Department of Neurosurgery, University of Pittsburgh, Pennsylvania
| | - Michael P Kelly
- 15Department of Orthopedic Surgery, Rady Children's Hospital, San Diego, California
| | - Munish Gupta
- 16Department of Orthopedic Surgery, Washington University, St. Louis, Missouri
| | - Robert Hart
- 17Department of Orthopaedic Surgery, Swedish Medical Center, Seattle, Washington
| | - Frank J Schwab
- 3Department of Orthopedic Surgery, Lennox Hill Hospital, New York, New York
| | - Douglas Burton
- 18Department of Orthopaedic Surgery, University of Kansas Medical Center, Kansas City, Kansas
| | - Christopher P Ames
- 19Department of Neurological Surgery, University of California, San Francisco, California; and
| | - Christopher I Shaffrey
- 20Departments of Neurosurgery and Orthopedic Surgery, Duke University, Durham, North Carolina
| | - Justin S Smith
- 1Department of Neurosurgery, University of Virginia, Charlottesville, Virginia
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9
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Passias PG, Krol O, Moattari K, Williamson TK, Lafage V, Lafage R, Kim HJ, Daniels A, Diebo B, Protopsaltis T, Mundis G, Kebaish K, Soroceanu A, Scheer J, Hamilton DK, Klineberg E, Schoenfeld AJ, Vira S, Line B, Hart R, Burton DC, Schwab FA, Shaffrey C, Bess S, Smith JS, Ames CP. Evolution of Adult Cervical Deformity Surgery Clinical and Radiographic Outcomes Based on a Multicenter Prospective Study: Are Behaviors and Outcomes Changing With Experience? Spine (Phila Pa 1976) 2022; 47:1574-1582. [PMID: 35797645 DOI: 10.1097/brs.0000000000004419] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/10/2022] [Accepted: 05/02/2022] [Indexed: 02/01/2023]
Abstract
STUDY DESIGN Retrospective cohort study. OBJECTIVE Assess changes in outcomes and surgical approaches for adult cervical deformity surgery over time. SUMMARY OF BACKGROUND DATA As the population ages and the prevalence of cervical deformity increases, corrective surgery has been increasingly seen as a viable treatment. Dramatic surgical advancements and expansion of knowledge on this procedure have transpired over the years, but the impact on cervical deformity surgery is unknown. MATERIALS AND METHODS Adult cervical deformity patients (18 yrs and above) with complete baseline and up to the two-year health-related quality of life and radiographic data were included. Descriptive analysis included demographics, radiographic, and surgical details. Patients were grouped into early (2013-2014) and late (2015-2017) by date of surgery. Univariate and multivariable regression analyses were used to assess differences in surgical, radiographic, and clinical outcomes over time. RESULTS A total of 119 cervical deformity patients met the inclusion criteria. Early group consisted of 72 patients, and late group consisted of 47. The late group had a higher Charlson Comorbidity Index (1.3 vs. 0.72), more cerebrovascular disease (6% vs. 0%, both P <0.05), and no difference in age, frailty, deformity, or cervical rigidity. Controlling for baseline deformity and age, late group underwent fewer three-column osteotomies [odds ratio (OR)=0.18, 95% confidence interval (CI): 0.06-0.76, P =0.014]. At the last follow-up, late group had less patients with: a moderate/high Ames horizontal modifier (71.7% vs. 88.2%), and overcorrection in pelvic tilt (4.3% vs. 18.1%, both P <0.05). Controlling for baseline deformity, age, levels fused, and three-column osteotomies, late group experienced fewer adverse events (OR=0.15, 95% CI: 0.28-0.8, P =0.03), and neurological complications (OR=0.1, 95% CI: 0.012-0.87, P =0.03). CONCLUSION Despite a population with greater comorbidity and associated risk, outcomes remained consistent between early and later time periods, indicating general improvements in care. The later cohort demonstrated fewer three-column osteotomies, less suboptimal realignments, and concomitant reductions in adverse events and neurological complications. This may suggest a greater facility with less invasive techniques.
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Affiliation(s)
- Peter G Passias
- Division of Spinal Surgery/Department of Orthopaedic and Neurosurgery, NYU Medical Center, NY Spine Institute, New York, NY
| | - Oscar Krol
- Division of Spinal Surgery/Department of Orthopaedic and Neurosurgery, NYU Medical Center, NY Spine Institute, New York, NY
| | - Kevin Moattari
- Division of Spinal Surgery/Department of Orthopaedic and Neurosurgery, NYU Medical Center, NY Spine Institute, New York, NY
| | - Tyler K Williamson
- Division of Spinal Surgery/Department of Orthopaedic and Neurosurgery, NYU Medical Center, NY Spine Institute, New York, NY
| | - Virginie Lafage
- Department of Orthopaedics, Lenox Hill Hospital, Northwell Health, NY, NY
| | - Renaud Lafage
- Department of Orthopaedic Surgery, Hospital for Special Surgery, New York, NY
| | - Han Jo Kim
- Department of Orthopaedic Surgery, Hospital for Special Surgery, New York, NY
| | - Alan Daniels
- Department of Orthopaedic Surgery, University of California, Davis, Davis, CA
| | - Bassel Diebo
- Deparment of Orthopedic Surgery, SUNY Downstate, New York, NY
| | - Themistocles Protopsaltis
- Division of Spinal Surgery/Department of Orthopaedic and Neurosurgery, NYU Medical Center, NY Spine Institute, New York, NY
| | - Gregory Mundis
- Division of Orthopaedic Surgery, Scripps Clinic, La Jolla, CA
| | - Khaled Kebaish
- Department of Orthopaedic Surgery, Johns Hopkins University School of Medicine, Baltimore, MD
| | - Alexandra Soroceanu
- Department of Orthopaedic Surgery, University of Calgary, Calgary, AB, Canada
| | - Justin Scheer
- Department of Neurological Surgery, University of California, San Francisco, San Francisco, CA
| | - D Kojo Hamilton
- Department of Neurological Surgery, University of Pittsburgh School of Medicine, Pittsburgh, PA
| | - Eric Klineberg
- Department of Orthopaedic Surgery, University of California, Davis, Davis, CA
| | - Andrew J Schoenfeld
- Department of Orthopedic Surgery, Brigham and Women's Center for Surgery and Public Health, Boston, MA
| | - Shaleen Vira
- Department of Orthopaedic Surgery, Southwest Scoliosis Center, Dallas, TX
| | - Breton Line
- Department of Spine Surgery, Denver International Spine Clinic, Presbyterian St. Luke's/Rocky Mountain Hospital for Children, Denver, CO
| | - Robert Hart
- Department of Orthopaedic Surgery, Swedish Neuroscience Institute, Seattle, WA
| | - Douglas C Burton
- Department of Orthopaedic Surgery, University of Kansas Medical Center, Kansas City, KS
| | - Frank A Schwab
- Department of Orthopaedics, Lenox Hill Hospital, Northwell Health, NY, NY
| | | | - Shay Bess
- Department of Spine Surgery, Denver International Spine Clinic, Presbyterian St. Luke's/Rocky Mountain Hospital for Children, Denver, CO
| | - Justin S Smith
- Department of Neurosurgery, University of Virginia Medical Center, Charlottesville, VA
| | - Christopher P Ames
- Department of Neurological Surgery, University of Pittsburgh School of Medicine, Pittsburgh, PA
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10
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Li Y, Basil G, Vanni S. Dropped head syndrome in a patient with Parkinson's disease and inflammatory myopathy, treated with sternocleidomastoid release and circumferential cervical fusion. Br J Neurosurg 2022:1-6. [PMID: 36106864 DOI: 10.1080/02688697.2022.2123892] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2020] [Revised: 01/16/2022] [Accepted: 09/08/2022] [Indexed: 11/02/2022]
Abstract
BACKGROUND Dropped head syndrome (DHS) is a recently recognised cause of cervical spinal deformity and disability. The combination of Parkinson's disease (PD) and inflammatory myopathy in the genesis of DHS has not been previously reported. Furthermore, the optimal surgical treatment of progressive DHS remains undefined. CASE DESCRIPTION We report the case of a 64-year-old patient with severe DHS and coronal plane deformity secondary to underlying PD, precipitated by a focal paraspinal myositis, successfully corrected using asymmetric sternocleidomastoid (SCM) release and circumferential cervical fusion. The nuances of decision-making in this challenging patient population are highlighted, including the benefits of intraoperative traction, anterior column reconstruction and bicortical screw fixation. Postoperatively, significant reductions in pain and disability were achieved, along with restoration of cervical lordosis (CL), C2-7 sagittal vertical axis (CSVA) and chin-brow vertical angle (CBVA). CONCLUSIONS Circumferential cervical fusion with concomitant SCM release is a useful option in the treatment of recalcitrant DHS with biplanar deformity, addressing the unique biomechanical and endocrinological challenges posed by patients with underlying PD.
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Affiliation(s)
- Yingda Li
- Department of Neurosurgery, Westmead Hospital, Westmead, Australia
- Department of Neurological Surgery, University of Miami Miller School of Medicine, Miami, FL, USA
| | - Gregory Basil
- Department of Neurological Surgery, University of Miami Miller School of Medicine, Miami, FL, USA
| | - Steven Vanni
- Department of Neurological Surgery, University of Miami Miller School of Medicine, Miami, FL, USA
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11
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Lafage R, Virk S, Elysee J, Passias P, Ames C, Hart R, Shaffrey C, Mundis G, Protopsaltis T, Gupta M, Klineberg E, Burton D, Schwab F, Lafage V. Radiographic Characteristics of Cervical Deformity (CD) Using a Discriminant Analysis: The Value of Extension Radiographs. Clin Spine Surg 2022; 35:E504-E509. [PMID: 35249971 DOI: 10.1097/bsd.0000000000001297] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/17/2021] [Accepted: 12/07/2021] [Indexed: 11/25/2022]
Abstract
STUDY DESIGN This was a retrospective review of a prospectively collected database. OBJECTIVE The aim of this study was to delineate radiographic parameters that distinguish severe cervical spine deformity (CSD). SUMMARY OF BACKGROUND DATA Our objective was to define parameters that distinguish severe CSD using a consensus approach combined with discriminant analysis as no system currently exists in the literature. METHODS Twelve CSD surgeons reviewed preoperative x-rays from a CSD database. A consensus was reached for categorizing patients into a severe cervical deformity (sCD), non-severe cervical deformity (non-sCD), or an indeterminate cohort. Radiographic parameters were found including classic cervical and spinopelvic parameters in neutral/flexion/extension alignment. To perform our discriminant analysis, we selected for parameters that had a significant difference between the sCD and non-sCD groups using the Student t test. A discriminant function analysis was used to determine which variables discriminate between the sCD versus non-sCD. A stepwise analysis was performed to build a model of parameters to delineate sCD. RESULTS A total of 146 patients with cervical deformity were reviewed (60.5±10.5 y; body mass index: 29.8 kg/m2; 61.3% female). There were 83 (56.8%) classified as sCD and 51 (34.9%) as non-sCD. The comparison analysis led to 16 radiographic parameters that were different between cohorts, and 5 parameters discriminated sCD and non-sCD. These parameters were cervical sagittal vertical axis, T1 slope, maximum focal kyphosis in extension, C2 slope in extension, and number of kyphotic levels in extension. The canonical coefficient of correlation was 0.689, demonstrating a strong association between our model and cervical deformity classification. The accuracy of classification was 87.0%, and cross-validation was 85.2% successful. CONCLUSIONS More than one third of a series of CSD patients were not considered to have a sCD. Analysis of an initial 17 parameters showed that a subset of 5 parameters can discriminate between sCD versus non-sCD with 85% accuracy. Our study demonstrates that flexion/extension images are critical for defining severe CD.
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Affiliation(s)
- Renaud Lafage
- Department of Orthopedic Surgery, Hospital for Special Surgery, New York
| | - Sohrab Virk
- Department of Orthopedic Surgery, Northwell Health, Great Neck
| | - Jonathan Elysee
- Department of Orthopedic Surgery, Hospital for Special Surgery, New York
| | - Peter Passias
- Department of Orthopedic Surgery, NYU Langone Orthopedic Hospital, New York, NY
| | - Christopher Ames
- Department of Neurosurgery, University of California, San Francisco, San Francisco, CA
| | - Robert Hart
- Department of Orthopedic Surgery, CA Swedish Neuroscience Institute, Seattle, WA
| | | | | | | | - Munish Gupta
- Department of Orthopedics, Washington University School of Medicine, St. Louis, MO
| | - Eric Klineberg
- Department of Orthopedic Surgery, San Diego Center for Spinal Disorders, La Jolla, CA
| | - Douglas Burton
- Department of Orthopaedic Surgery, University of Kansas Medical Center, Kansas City, KS
| | - Frank Schwab
- Department of Orthopedic Surgery, Hospital for Special Surgery, New York
| | - Virginie Lafage
- Department of Orthopedic Surgery, Hospital for Special Surgery, New York
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12
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Passias PG, Williamson TK. Commentary: Incidence and Risk Factors of Mechanical Complications After Posterior-Based Osteotomies for Correction of Moderate to Severe Adult Cervical Deformity: 1-Year and 2-Year Follow-up. Neurosurgery 2022; 90:e88-e89. [PMID: 35060957 DOI: 10.1227/neu.0000000000001829] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2021] [Accepted: 11/07/2021] [Indexed: 11/19/2022] Open
Affiliation(s)
- Peter G Passias
- Department of Orthopedic Surgery, NYU Langone Medical Center, NYU Langone Orthopedic Hospital, NYU School of Medicine, New York Spine Institute, New York, New York, USA
- Department of Neurologic Surgery, NYU Langone Medical Center, NYU Langone Orthopedic Hospital, NYU School of Medicine, New York Spine Institute, New York, New York, USA
| | - Tyler K Williamson
- Department of Orthopedic Surgery, NYU Langone Medical Center, NYU Langone Orthopedic Hospital, NYU School of Medicine, New York Spine Institute, New York, New York, USA
- Department of Neurologic Surgery, NYU Langone Medical Center, NYU Langone Orthopedic Hospital, NYU School of Medicine, New York Spine Institute, New York, New York, USA
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13
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Lau D, Joshi RS, Haddad AF, Deviren V, Ames CP. Incidence and Risk Factors of Mechanical Complications After Posterior-Based Osteotomies for Correction of Moderate to Severe Adult Cervical Deformity: 1-Year and 2-Year Follow-up. Neurosurgery 2022; 90:207-214. [PMID: 34995272 DOI: 10.1227/neu.0000000000001781] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2020] [Accepted: 09/01/2021] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND Rigid cervical deformity (CD) requires multilevel and/or high-grade osteotomies and long-construct fusions to achieve adequate correction. The incidence of mechanical complications (MCs) remains incompletely studied. OBJECTIVE To define the incidence and risk factors for MC. METHODS A retrospective review of consecutive patients with CD who underwent correction from 2010 to 2018 was performed. Inclusion criteria were cervical kyphosis >20° and/or cervical sagittal vertical axis (cSVA) >4 cm. MCs (junctional kyphosis/failure, pseudarthrosis, and implant failure) and reoperation at 1 and 2 yr were examined. RESULTS Eighty-three patients were included. The mean age was 63.4 yr, and 61.0% were female. Fifty-three percent underwent 3-column osteotomies. After surgery, cervical parameters were significantly improved: cSVA (6.2 vs 3.8 cm, P < .001), cervical lordosis (6.3 vs -8.3°, P < .001), cervical scoliosis (CS) (6.5 vs 2.2°, P < .001), and T1 slope (41.7 vs 36.3°, P = .007). The MC rate was 28.9%: junctional (18.1%), implant (16.9%), and pseudarthrosis (10.8%). MC rates at 1 and 2 yr were 14.5% and 25.5%, respectively: junctional (9.6% and 17.6%), implant (9.6% and 17.6%), and pseudarthrosis (2.4% and 7.8%). The overall reoperation rate was 24.1%: 14.5% at 1 yr and 19.6% at 2 yr. Body mass index (BMI) (P = .015) and preoperative CS (P = .040) were independently associated with higher odds of MC. Receiver operating characteristic curves defined CS >5° to be the threshold of risk for MCs and reoperation. CONCLUSION Correction of CD is effective by posterior-based osteotomes, but MCs are relatively high at 1 and 2 yr. BMI >30 and preoperative CS >5° predispose patients for MC and reoperation.
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Affiliation(s)
- Darryl Lau
- Department of Neurological Surgery, New York University, New York, New York, USA
| | - Rushikesh S Joshi
- Department of Neurological Surgery, University of Michigan, Ann Arbor, Michigan, USA
| | - Alexander F Haddad
- Department of Neurological Surgery, University of California, San Francisco, San Francisco, California, USA
| | - Vedat Deviren
- Department of Orthopedic Surgery, University of California, San Francisco, San Francisco, California, USA
| | - Christopher P Ames
- Department of Neurological Surgery, University of California, San Francisco, San Francisco, California, USA
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14
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Cabrera J, Carelli L, Girão A, Cechin Í. Unilateral spacer distraction of the subaxial cervical facet joint for the treatment of fixed coronal malalignment of the craniovertebral junction. JOURNAL OF CRANIOVERTEBRAL JUNCTION AND SPINE 2022; 13:121-126. [PMID: 35837431 PMCID: PMC9274674 DOI: 10.4103/jcvjs.jcvjs_9_22] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2022] [Accepted: 05/08/2022] [Indexed: 11/09/2022] Open
Abstract
Introduction: The standard treatment for a fixed coronal malalignment of the craniovertebral junction is an anterior and/or posterior column osteotomy (PCO) plus instrumentation. However, the procedure is very challenging, carrying an inherently high risk of complications even in experienced hands. This case series demonstrates the usefulness of an alternative treatment that adds a unilateral spacer distraction (USD) to the subaxial cervical facet joint to promote coronal realignment and fusion. Materials and Methods: A single-center retrospective study of the patients with fixed coronal malalignment of the craniovertebral junction caused by different etiologies treated with USD in the concavity side with PCO in the convexity side of the subaxial cervical spine. Demographic characteristics and radiological parameters were collected with special emphasis on clinical and radiological measurements of coronal alignment of the cervical spine. Results: From 2012 to 2019, four patients were treated with USD of the subaxial cervical spine complementing an asymmetrical PCO at the same level. The causes of coronal imbalance were congenital, tuberculosis, posttraumatic, and ankylosing spondylitis. The level of USD was C2–C3 in three patients and C3–C4 in one patient. A substantial coronal realignment was achieved in all four. One patient had an iatrogenic vertebral artery injury during the dissection and facet distraction and developed Wallenberg's syndrome with partial recovery. Conclusions: USD of the concave side with unilateral PCO of the convexity side in the subaxial cervical spine is a promising alternative treatment for fixed coronal malalignment of the craniovertebral junction from different causes.
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15
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Passias PG, Passfall L, Horn SR, Pierce KE, Lafage V, Lafage R, Smith JS, Line BG, Mundis GM, Eastlack R, Diebo BG, Protopsaltis TS, Kim HJ, Scheer J, Burton DC, Hart RA, Schwab FJ, Bess S, Ames CP, Shaffrey CI. Risk-benefit assessment of major versus minor osteotomies for flexible and rigid cervical deformity correction. JOURNAL OF CRANIOVERTEBRAL JUNCTION AND SPINE 2021; 12:263-268. [PMID: 34728993 PMCID: PMC8501816 DOI: 10.4103/jcvjs.jcvjs_35_21] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2021] [Accepted: 04/30/2021] [Indexed: 11/30/2022] Open
Abstract
Introduction: Osteotomies are commonly performed to correct sagittal malalignment in cervical deformity (CD). However, the risks and benefits of performing a major osteotomy for cervical deformity correction have been understudied. The objective of this retrospective cohort study was to investigate the risks and benefits of performing a major osteotomy for CD correction. Methods: Patients stratified based on major osteotomy (MAJ) or minor (MIN). Independent t-tests and Chi-squared tests were used to assess differences between MAJ and MIN. A sub-analysis compared patients with flexible versus rigid CL. Results: 137 CD patients were included (62 years, 65% F). 19.0% CD patients underwent a MAJ osteotomy. After propensity score matching for cSVA, 52 patients were included. About 19.0% CD patients underwent a MAJ osteotomy. MAJ patients had more minor complications (P = 0.045), despite similar surgical outcomes as MIN. At 3M, MAJ and MIN patients had similar NDI, mJOA, and EQ5D scores, however by 1 year, MAJ patients reached MCID for NDI less than MIN patients (P = 0.003). MAJ patients with rigid deformities had higher rates of complications (79% vs. 29%, P = 0.056) and were less likely to show improvement in NDI at 1 year (0.95 vs. 0.54, P = 0.027). Both groups had similar sagittal realignment at 1 year (all P > 0.05). Conclusions: Cervical deformity patients who underwent a major osteotomy had similar clinical outcomes at 3-months but worse outcomes at 1-year as compared to minor osteotomies, likely due to differences in baseline deformity. Patients with rigid deformities who underwent a major osteotomy had higher complication rates and worse clinical improvement despite similar realignment at 1 year.
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Affiliation(s)
- Peter Gust Passias
- Departments of Orthopaedic and Neurosurgery, Division of Spinal Surgery, NYU Langone Medical Center, NY Spine Institute, New York, NY, USA
| | - Lara Passfall
- Departments of Orthopaedic and Neurosurgery, Division of Spinal Surgery, NYU Langone Medical Center, NY Spine Institute, New York, NY, USA
| | - Samantha R Horn
- Departments of Orthopaedic and Neurosurgery, Division of Spinal Surgery, NYU Langone Medical Center, NY Spine Institute, New York, NY, USA
| | - Katherine E Pierce
- Departments of Orthopaedic and Neurosurgery, Division of Spinal Surgery, NYU Langone Medical Center, NY Spine Institute, New York, NY, USA
| | - Virginie Lafage
- Department of Orthopaedic Surgery, Hospital for Special Surgery, New York, NY, USA
| | - Renaud Lafage
- Department of Orthopaedic Surgery, Hospital for Special Surgery, New York, NY, USA
| | - Justin S Smith
- Department of Neurosurgery, University of Virginia Medical Center, Charlottesville, VA, USA
| | - Breton G Line
- Department of Spine Surgery, Denver International Spine Center, Presbyterian St. Luke's, Rocky Mountain Hospital for Children, Denver, CO, USA
| | | | - Robert Eastlack
- Division of Orthopaedic Surgery, Scripps Clinic, La Jolla, USA
| | - Bassel G Diebo
- Department of Orthopedic Surgery, SUNY Downstate, New York, NY, USA
| | | | - Han Jo Kim
- Department of Orthopaedic Surgery, Hospital for Special Surgery, New York, NY, USA
| | - Justin Scheer
- Department of Neurological Surgery, University of California, San Francisco, San Francisco, CA, USA
| | - Douglas C Burton
- Department of Orthopaedic Surgery, University of Kansas Medical Center, Kansas City, Kansas, USA
| | - Robert A Hart
- Department of Orthopaedic Surgery, Swedish Neuroscience Institute, Seattle, WA, USA
| | - Frank J Schwab
- Department of Orthopaedic Surgery, Hospital for Special Surgery, New York, NY, USA
| | - Shay Bess
- Department of Spine Surgery, Denver International Spine Center, Presbyterian St. Luke's, Rocky Mountain Hospital for Children, Denver, CO, USA
| | - Christopher P Ames
- Department of Neurological Surgery, University of California, San Francisco, San Francisco, CA, USA
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16
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Passias PG, Alas H, Pierce KE, Galetta M, Krol O, Passfall L, Kummer N, Naessig S, Ahmad W, Diebo BG, Lafage R, Lafage V. The impact of the lower instrumented level on outcomes in cervical deformity surgery. JOURNAL OF CRANIOVERTEBRAL JUNCTION AND SPINE 2021; 12:306-310. [PMID: 34728999 PMCID: PMC8501812 DOI: 10.4103/jcvjs.jcvjs_23_21] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2021] [Accepted: 06/07/2021] [Indexed: 11/24/2022] Open
Abstract
Background: The lower instrumented vertebrae (LIVs) in cervical deformity (CD) constructs may have varying effects on patient outcomes that are still poorly understood. Objective: The objective of the study is to compare outcomes in CD patients undergoing instrumented correction according to the relation of LIV with primary driver (PD). Methods: Patients who met radiographic criteria for CD were included in the study. Patients were stratified by PD of deformity: cervical (C) through AMES classification (TS-CL >20 or cervical sagittal vertical axis >40) and thoracic (T) through hyper/hypokyphosis (TK) from T4-T12 (60 < TK < 40). Patients were further stratified by LIV in relation to curve apex (above/below). Univariate and multivariate analyses identified group differences in postoperative health-related quality-of-life and distal junctional kyphosis (DJK) (>10° LIV and LIV + 2) rate up to 1 year. Results: Sixty-two patients were analyzed. Twenty-one patients had a C-PD and 41 had a T-PD by definition. 100% of C-PDs had LIVs below CL apex, while 9.2% of T-PDs had LIVs below (caudal) to TK apex and 90.8% had LIVs above TK apex. By 1 year, C patients trended lower Neck Disability Index (NDI) (21.9 vs. 29.0, P = 0.245), lower numeric rating scales neck pain (4.2 vs. 5.1, P = 0.358), and significantly higher EuroQol five-dimensional questionnaire Visual Analog Scale (69.2 vs. 52.4, P = 0.040). When T patients with LIVs below TK apex were excluded, remaining T patients with LIV above apex had significantly higher 1-year NDI than C patients (37.5 vs. 21.9, P = .05). T patients also trended higher rates of postoperative DJK than C (19.5% vs. 4.8%, P = 0.119). Conclusions: Stopping before apex was more common in patients with a primary thoracic driver (T) and associated with deleterious effects. Primary cervical driver (C) tended to have LIVs inclusive of CL apex with lower rates of DJK.
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Affiliation(s)
- Peter Gust Passias
- Department of Orthopaedic and Neurosurgery, Division of Spinal Surgery, NYU Medical Center, NY Spine Institute, New York, NY, USA
| | - Haddy Alas
- Department of Orthopaedic and Neurosurgery, Division of Spinal Surgery, NYU Medical Center, NY Spine Institute, New York, NY, USA
| | - Katherine E Pierce
- Department of Orthopaedic and Neurosurgery, Division of Spinal Surgery, NYU Medical Center, NY Spine Institute, New York, NY, USA
| | - Matthew Galetta
- Department of Orthopaedic Surgery, NYU Langone Orthopedic Hospital, New York, NY, USA
| | - Oscar Krol
- Department of Orthopaedic and Neurosurgery, Division of Spinal Surgery, NYU Medical Center, NY Spine Institute, New York, NY, USA
| | - Lara Passfall
- Department of Orthopaedic and Neurosurgery, Division of Spinal Surgery, NYU Medical Center, NY Spine Institute, New York, NY, USA
| | - Nicholas Kummer
- Department of Orthopaedic and Neurosurgery, Division of Spinal Surgery, NYU Medical Center, NY Spine Institute, New York, NY, USA
| | - Sara Naessig
- Department of Orthopaedic and Neurosurgery, Division of Spinal Surgery, NYU Medical Center, NY Spine Institute, New York, NY, USA
| | - Waleed Ahmad
- Department of Orthopaedic and Neurosurgery, Division of Spinal Surgery, NYU Medical Center, NY Spine Institute, New York, NY, USA
| | - Bassel G Diebo
- Department of Orthopedic Surgery, SUNY Downstate, New York, NY, USA
| | - Renaud Lafage
- Department of Orthopaedics, Hospital for Special Surgery, New York, NY, USA
| | - Virginie Lafage
- Department of Orthopaedics, Hospital for Special Surgery, New York, NY, USA
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17
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Lau D, Guo L, Deviren V, Ames CP. Utility of intraoperative neuromonitoring and outcomes of neurological complication in lower cervical and upper thoracic posterior-based three-column osteotomies for cervical deformity. J Neurosurg Spine 2021:1-9. [PMID: 34624840 DOI: 10.3171/2021.5.spine202057] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2020] [Accepted: 05/05/2021] [Indexed: 11/06/2022]
Abstract
OBJECTIVE For severe and rigid adult cervical deformity, posterior-based three-column osteotomies (3COs) are warranted, but neurological complications are relatively high with such procedures. The performance measures of intraoperative neuromonitoring (IONM) during cervicothoracic 3CO have yet to be studied, and there remains a paucity of literature regarding the topic. Therefore, the authors of this study examined the performance of IONM in predicting new neurological weakness following lower cervical and upper thoracic 3CO. In addition, they report the 6-month, 1-year, and 2-year outcomes of patients who experienced new postoperative weakness. METHODS The authors performed a retrospective review of a single surgeon's experience from 2011 to 2018 with all patients who had undergone posterior-based 3CO in the lower cervical (C7) or upper thoracic (T1-4) spine. Medical and neuromonitoring records were independently reviewed. RESULTS A total of 56 patients were included in the analysis, 38 of whom had undergone pedicle subtraction osteotomy and 18 of whom had undergone vertebral column resection. The mean age was 61.6 years, and 41.1% of the patients were male. Among the study cohort, 66.1% were myelopathic and 33.9% had preoperative weakness. Mean blood loss was 1565.0 ml, and length of surgery was 315.9 minutes. Preoperative and postoperative measures assessed were cervical sagittal vertical axis (6.5 and 3.8 cm, respectively; p < 0.001), cervical lordosis (2.3° and -6.7°, p = 0.042), and T1 slope (48.6° and 35.8°, p < 0.001). The complication rate was 49.0%, and the new neurological deficit rate was 17.9%. When stratifying by osteotomy level, there were significantly higher rates of neurological deficits at C7 and T1: C7 (37.5%), T1 (44.4%), T2 (16.7%), T3 (14.3%), and T4 (0.0%; p = 0.042). Most new neurological weakness was the nerve root pattern rather than the spinal cord pattern. Overall, there were 16 IONM changes at any threshold: 14 at 50%, 8 at 75%, and 13 if only counting patients who did not return to baseline (RTB). Performance measures for the various thresholds were accuracy (73.2% to 77.8%), positive predictive value (25.0% to 46.2%), negative predictive value (81.3% to 88.1%), sensitivity (18.2% to 54.5%), and specificity (77.8% to 86.7%). Sensitivity to detect a spinal cord pattern of weakness was 100% and 28.6% for a nerve root pattern of weakness. In patients with a new postoperative deficit, 22.2% were unchanged, 44.4% improved, and 33.3% had a RTB at the 2-year follow-up. CONCLUSIONS Complication rates are high following posterior 3CO for cervical deformity. 3CO at C7 and T1 has the highest rates of neurological deficit. Current IONM modalities have modest performance in predicting postoperative deficits, especially for nerve root neuropraxia. A large prospective multicenter study is warranted.
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Affiliation(s)
- Darryl Lau
- 1Department of Neurosurgery, New York University, New York, New York
| | - Lanjun Guo
- 2Department of Neurophysiology, University of California, San Francisco
| | - Vedat Deviren
- 3Department of Orthopaedic Surgery, University of California, San Francisco; and
| | - Christopher P Ames
- 4Department of Neurological Surgery, University of California, San Francisco, California
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18
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Le HV, Wick JB, Lafage R, Mundis GM, Eastlack RK, Bess S, Burton DC, Ames CP, Smith JS, Passias PG, Gupta MC, Lafage V, Klineberg EO. Association of findings on preoperative extension lateral cervical radiography with osteotomy type, approach, and postoperative cervical alignment after cervical deformity surgery. J Neurosurg Spine 2021; 36:93-98. [PMID: 34479192 DOI: 10.3171/2021.3.spine202156] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2020] [Accepted: 03/10/2021] [Indexed: 11/06/2022]
Abstract
OBJECTIVE The authors' objective was to determine whether preoperative lateral extension cervical spine radiography can be used to predict osteotomy type and postoperative alignment parameters after cervical spine deformity surgery. METHODS A total of 106 patients with cervical spine deformity were reviewed. Radiographic parameters on preoperative cervical neutral and extension lateral radiography were compared with 3-month postoperative radiographic alignment parameters. The parameters included T1 slope, C2 slope, C2-7 cervical lordosis, cervical sagittal vertical axis, and T1 slope minus cervical lordosis. Associations of radiographic parameters with osteotomy type and surgical approach were also assessed. RESULTS On extension lateral radiography, patients who underwent lower grade osteotomy had significantly lower T1 slope, T1 slope minus cervical lordosis, cervical sagittal vertical axis, and C2 slope. Patients who achieved more normal parameters on extension lateral radiography were more likely to undergo surgery via an anterior approach. Although baseline parameters were significantly different between neutral lateral and extension lateral radiographs, 3-month postoperative lateral and preoperative extension lateral radiographs were statistically similar for T1 slope minus cervical lordosis and C2 slope. CONCLUSIONS Radiographic parameters on preoperative extension lateral radiography were significantly associated with surgical approach and osteotomy grade and were similar to those on 3-month postoperative lateral radiography. These results demonstrated that extension lateral radiography is useful for preoperative planning and predicting postoperative alignment.
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Affiliation(s)
- Hai V Le
- 1Department of Orthopaedic Surgery, UC Davis Medical Center, Sacramento, California
| | - Joseph B Wick
- 1Department of Orthopaedic Surgery, UC Davis Medical Center, Sacramento, California
| | | | - Gregory M Mundis
- 3Department of Orthopedics, Scripps Clinic, La Jolla, California
| | | | - Shay Bess
- 4Denver International Spine Center, Presbyterian St. Luke's/Rocky Mountain Hospital for Children, Denver, Colorado
| | - Douglas C Burton
- 5Department of Orthopaedic Surgery, University of Kansas School of Medicine, Kansas City, Kansas
| | - Christopher P Ames
- 6Department of Neurosurgery, University of California, San Francisco, California
| | - Justin S Smith
- 7Department of Neurosurgery, University of Virginia Medical Center, Charlottesville, Virginia
| | - Peter G Passias
- 8Department of Orthopedic Surgery, NYU Langone Health, New York, New York; and
| | - Munish C Gupta
- 9Department of Orthopaedic Surgery, Washington University School of Medicine, St. Louis, Missouri
| | | | - Eric O Klineberg
- 1Department of Orthopaedic Surgery, UC Davis Medical Center, Sacramento, California
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19
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Abstract
The treatment of adult cervical deformity continues to be complex with high complication rates. However there are many new advancements and overall patients do well following surgical correction. To date there are now many types of cervical deformity that have been classified and there exists a variety of surgical options. These recent advances have been developed in the last few years and the field continues to grow at a rapid rate. Thus, the goal of this article is to provide an updated review of cervical sagittal balance including; cervical alignment parameters, deformity classification, clinical evaluation, with both conservative and surgical treatment options.
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Affiliation(s)
- Justin K Scheer
- Department of Neurological Surgery, 8785University of California, San Francisco, San Francisco, CA, USA
| | - Darryl Lau
- Department of Neurosurgery, 12296School of Medicine, New York University, New York, NY, USA
| | - Christopher P Ames
- Department of Neurological Surgery, 8785University of California, San Francisco, San Francisco, CA, USA
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20
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Lee S, Cho DC, Chon H, Roh SW, Choi I, Park JH. Comparison between Anterior Cervical Decompression with Fusion and Posterior Cervical Fusion with Wide Facetectomy for Treatment of Severe Bony Foraminal Stenosis. J Korean Neurosurg Soc 2021; 64:552-561. [PMID: 34185981 PMCID: PMC8273773 DOI: 10.3340/jkns.2020.0263] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2020] [Accepted: 10/28/2020] [Indexed: 11/28/2022] Open
Abstract
Objective To compare the anterior cervical discectomy and fusion (ACDF) and posterior cervical fusion (PCF) with wide facetectomy in the treatment of parallel-shaped bony foraminal stenosis (FS).
Methods Thirty-six patients underwent surgery due to one-or-two levels of parallel-shaped cervical FS. ACDF was performed in 16 patients, and PCF using CPS was performed in 20 patients. All patients were followed up at 1, 3, 6, and 12 months postoperatively. Standardized outcome measures such as Numeric rating scale (NRS) score for arm/neck pain and Neck disability index (NDI) were evaluated. Cervical radiographs were used to compare the C2–7 Cobb’s angle, segmental angle, and fusion rates.
Results There was an improvement in NRS scores after both approaches for radicular arm pain (mean change -6.78 vs. -8.14, p=0.012), neck pain (mean change -1.67 vs. -4.36, p=0.038), and NDI score (-19.69 vs. -18.15, p=0.794). The segmental angle improvement was greater in the ACDF group than in the posterior group (9.4°±2.7° vs. 3.3°±5.1°, p=0.004). However, there was no significant difference in C2–7 Cobb angle between groups (16.2°±7.9° vs. 14.8°±8.5°, p=0.142). As a complication, dysphagia was observed in one case of the ACDF group.
Conclusion In the treatment of parallel-shaped bony FS up to two surgical levels, segmental angle improvement was more favorable in patients who underwent ACDF. However, PCF with wide facetectomy using CPS should be considered as an alternative treatment option in cases where the anterior approach is burdensome.
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Affiliation(s)
- Subum Lee
- Department of Neurosurgery, Kyungpook National University Hospital, Daegu, Korea.,Department of Neurosurgery, School of Medicine, Kyungpook National University, Daegu, Korea
| | - Dae-Chul Cho
- Department of Neurosurgery, Kyungpook National University Hospital, Daegu, Korea.,Department of Neurosurgery, School of Medicine, Kyungpook National University, Daegu, Korea
| | - Haemin Chon
- Department of Neurosurgery, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - Sung Woo Roh
- Department of Neurosurgery, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - Il Choi
- Department of Neurosurgery, Dongtan Sacred Heart Hospital, University of Hallym University, Hwaseong, Korea
| | - Jin Hoon Park
- Department of Neurosurgery, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
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21
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A Comparison of Three Different Positioning Techniques on Surgical Corrections and Postoperative Alignment in Cervical Spinal Deformity (CD) Surgery. Spine (Phila Pa 1976) 2021; 46:567-570. [PMID: 33290369 DOI: 10.1097/brs.0000000000003851] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
STUDY DESIGN Retrospective review of a prospective multicenter cervical deformity database. OBJECTIVE To examine the differences in sagittal alignment correction between three positioning methods in cervical spinal deformity surgery (CD). SUMMARY OF BACKGROUND DATA Surgical correction for CD is technically demanding and various techniques are utilized to achieve sagittal alignment objectives. The effect of different patient positioning techniques on sagittal alignment correction following CD remains unknown. METHODS Patients with sagittal deformity who underwent a posterior approach (with and without anterior approach) with an upper instrumented vertebra of C6 or above. Patients with Grade 5, 6, or 7 osteotomies were excluded. Positioning groups were Mayfield skull clamp, bivector traction, and halo ring. Preoperative lower surgical sagittal curve (C2-C7), C2-C7 sagittal vertical axis (cSVA), cervical scoliosis, T1 slope minus cervical lordosis (TS-CL), T1 slope (T1S), chin-brow vertebral angle (CBVA), C2-T3 curve, and C2-T3 SVA was assessed and compared with postoperative radiographs. Segmental changes were analyzed using the Fergusson method. RESULTS Eighty patients (58% female) with a mean age of 60.6 ± 10.5 years (range, 31-83) were included. The mean postoperative C2-C7 lordosis was 7.8° ± 14 and C2-C7 SVA was 34.1 mm ± 15. There were overall significant changes in cervical alignment across the entire cohort, with improvements in T1 slope (P < 0.001), C2-C7 (P < 0.001), TS-CL (P < 0.001), and cSVA (P = 0.006). There were no differences postoperatively of any radiographic parameter between positioning groups (P > 0.05). The majority of segmental lordotic correction was achieved at C4-5-6 (mean 6.9° ± 11). Additionally, patients who had bivector traction applied had had significantly more segmental correction at C7-T1-T2 compared with Mayfield and halo traction (4.2° vs. 0.3° vs. -1.7° respectively, P < 0.027). CONCLUSION Postoperative cervical sagittal correction or alignment was not affected by patient position. The majority of segmental correction occurred at C4-5-6 across all positioning methods, while bivector traction had the largest corrective ability at the cervicothoracic junction.Level of Evidence: 4.
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22
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Al Barim B, Müther M, Schipmann S, Stummer W, Schwake M. Pedicle Subtraction Osteotomy for Deformity Correction in the Upper Cervical Spine: A Technical Note. J Neurol Surg A Cent Eur Neurosurg 2021; 83:69-74. [PMID: 33583013 DOI: 10.1055/s-0040-1721003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
BACKGROUND Kyphosis is the most common deformity of the cervical spine leading to development of severe disabilities. In case of fused kyphosis, surgical treatment can be demanding and often requires multiple-step procedures for adequate correction. We present a technique of single-stage pedicle subtraction osteotomy (PSO) of C3 to treat a patient with fused kyphosis of C2 and C3 causing spinal stenosis with subsequent myelopathy. METHODS A 53-year-old man presented with progressive myelopathy not able to walk with 6/18 points on the modified Japanese Orthopedic Association scale. Horizontal gaze was lost due to cervical kyphosis. Magnetic resonance imaging (MRI) revealed a cervical kyphosis causing stenosis, cord compression, and kinking; computed tomography (CT) showed substantial anterior and posterior fusion of C2 and C3. RESULTS Surgery included decompression via laminectomy of C2 to C6 in combination with PSO of C3 and additional dorsal instrumentation of C2 to C6. Cervical spinal alignment was corrected, as the C2-C4 Cobb angle was reduced from 48.9 to 20.6 degrees. Horizontal gaze was restored. Postoperative MRI demonstrated full decompression of the cord without kinking of the vertebral arteries. No complications were noted. The patient recovered well with restoration of his ability to walk. CONCLUSION Single-stage pedicle subtraction closing wedge osteotomy in the upper cervical spine, although a demanding surgical procedure, is an alternative treatment option in selected cases of fused and severe cervical kyphosis. In contrast to multiple-step approaches, the single-stage procedure could reduce operating time and may thus decrease complications.
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Affiliation(s)
- Bilal Al Barim
- Department of Neurosurgery, University Hospital Münster, Münster, Germany
| | - Michael Müther
- Department of Neurosurgery, University Hospital Münster, Münster, Germany
| | | | - Walter Stummer
- Department of Neurosurgery, University Hospital Münster, Münster, Germany
| | - Michael Schwake
- Department of Neurosurgery, University Hospital Münster, Münster, Germany
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23
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Protopsaltis TS, Stekas N, Smith JS, Soroceanu A, Lafage R, Daniels AH, Kim HJ, Passias PG, Mundis GM, Klineberg EO, Hamilton DK, Gupta M, Lafage V, Hart RA, Schwab F, Burton DC, Bess S, Shaffrey CI, Ames CP. Surgical outcomes in rigid versus flexible cervical deformities. J Neurosurg Spine 2021:1-9. [PMID: 33578386 DOI: 10.3171/2020.8.spine191185] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2019] [Accepted: 08/25/2020] [Indexed: 11/06/2022]
Abstract
OBJECTIVE Cervical deformity (CD) patients have severe disability and poor health status. However, little is known about how patients with rigid CD compare with those with flexible CD. The main objectives of this study were to 1) assess whether patients with rigid CD have worse baseline alignment and therefore require more aggressive surgical corrections and 2) determine whether patients with rigid CD have similar postoperative outcomes as those with flexible CD. METHODS This is a retrospective review of a prospective, multicenter CD database. Rigid CD was defined as cervical lordosis (CL) change < 10° between flexion and extension radiographs, and flexible CD was defined as a CL change ≥ 10°. Patients with rigid CD were compared with those with flexible CD in terms of cervical alignment and health-related quality of life (HRQOL) at baseline and at multiple postoperative time points. The patients were also compared in terms of surgical and intraoperative factors such as operative time, blood loss, and number of levels fused. RESULTS A total of 127 patients met inclusion criteria (32 with rigid and 95 with flexible CD, 63.4% of whom were females; mean age 60.8 years; mean BMI 27.4); 47.2% of cases were revisions. Rigid CD was associated with worse preoperative alignment in terms of T1 slope minus CL, T1 slope, C2-7 sagittal vertical axis (cSVA), and C2 slope (C2S; all p < 0.05). Postoperatively, patients with rigid CD had an increased mean C2S (29.1° vs 22.2°) at 3 months and increased cSVA (47.1 mm vs 37.5 mm) at 1 year (p < 0.05) compared with those with flexible CD. Patients with rigid CD had more posterior levels fused (9.5 vs 6.3), fewer anterior levels fused (1 vs 2.0), greater blood loss (1036.7 mL vs 698.5 mL), more 3-column osteotomies (40.6% vs 12.6%), greater total osteotomy grade (6.5 vs 4.5), and mean osteotomy grade per level (3.3 vs 2.1) (p < 0.05 for all). There were no significant differences in baseline HRQOL scores, the rate of distal junctional kyphosis, or major/minor complications between patients with rigid and flexible CD. Both rigid and flexible CD patients reported significant improvements from baseline to 1 year according to the numeric rating scale for the neck (-2.4 and -2.7, respectively), Neck Disability Index (-8.4 and -13.3, respectively), modified Japanese Orthopaedic Association score (0.1 and 0.6), and EQ-5D (0.01 and 0.05) (p < 0.05). However, HRQOL changes from baseline to 1 year did not differ between rigid and flexible CD patients. CONCLUSIONS Patients with rigid CD have worse baseline cervical malalignment compared with those with flexible CD but do not significantly differ in terms of baseline disability. Rigid CD was associated with more invasive surgery and more aggressive corrections, resulting in increased operative time and blood loss. Despite more extensive surgeries, rigid CD patients had equivalent improvements in HRQOL compared with flexible CD patients. This study quantifies the importance of analyzing flexion-extension images, creating a prognostic tool for surgeons planning CD correction, and counseling patients who are considering CD surgery.
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Affiliation(s)
| | - Nicholas Stekas
- 1Department of Orthopedic Surgery, New York University Langone Orthopedic Hospital, New York, New York
| | - Justin S Smith
- 2Department of Neurosurgery, University of Virginia Health System, Charlottesville, Virginia
| | | | - Renaud Lafage
- 4Department of Orthopedic Surgery, Hospital for Special Surgery, New York, New York
| | - Alan H Daniels
- 5Department of Orthopaedic Surgery, Warren Alpert School of Medicine, Providence, Rhode Island
| | - Han Jo Kim
- 4Department of Orthopedic Surgery, Hospital for Special Surgery, New York, New York
| | - Peter G Passias
- 1Department of Orthopedic Surgery, New York University Langone Orthopedic Hospital, New York, New York
| | | | - Eric O Klineberg
- 7Department of Orthopaedic Surgery, University of California, Davis, California
| | - D Kojo Hamilton
- 8Department of Neurological Surgery, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania
| | - Munish Gupta
- 9Department of Orthopaedic Surgery, Washington University in St. Louis, Missouri
| | - Virginie Lafage
- 4Department of Orthopedic Surgery, Hospital for Special Surgery, New York, New York
| | - Robert A Hart
- 10Department of Orthopaedic Surgery, Swedish Neuroscience Institute, Seattle, Washington
| | - Frank Schwab
- 4Department of Orthopedic Surgery, Hospital for Special Surgery, New York, New York
| | - Douglas C Burton
- 11Department of Orthopaedic Surgery, University of Kansas School of Medicine, Kansas City, Kansas
| | - Shay Bess
- 12Denver International Spine Clinic, Presbyterian St. Luke's Medical Center, Rocky Mountain Hospital for Children, Denver, Colorado; and
| | - Christopher I Shaffrey
- 2Department of Neurosurgery, University of Virginia Health System, Charlottesville, Virginia
| | - Christopher P Ames
- 13Department of Neurological Surgery, University of California, San Francisco, California
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Hong JT, Koller H, Abumi K, Yuan W, Falavigna A, Lee HJ, Lee JB, Le Huec JC, Park JH, Kim IS. A new nomenclature system for the surgical treatment of cervical spine deformity, developing, and validation of SOF system. EUROPEAN SPINE JOURNAL : OFFICIAL PUBLICATION OF THE EUROPEAN SPINE SOCIETY, THE EUROPEAN SPINAL DEFORMITY SOCIETY, AND THE EUROPEAN SECTION OF THE CERVICAL SPINE RESEARCH SOCIETY 2021; 30:1670-1680. [PMID: 33547943 DOI: 10.1007/s00586-021-06751-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/19/2020] [Revised: 12/08/2020] [Accepted: 01/23/2021] [Indexed: 11/25/2022]
Abstract
PURPOSE To develop and assess the reliability of new nomenclature system that systematically organizes osteotomy techniques and briefly describes the surgical approach, the surgical sequence, and the fixation technique for cervical spine deformity (CSD). METHODS We developed a new classification system (SOF system) for CSD surgery that describes the sequence of surgical approach (S), the grade of osteotomy (O), and the information of fixation (F) using alphanumeric codes. Twenty CSD osteotomies (8 anterior osteotomies, 12 posterior osteotomies) were included in this study to evaluate the inter- and intra-observer agreement based on operation records. Six observers performed independent evaluations of the operation records in random order. Each observer described 20 CSD surgeries using the SOF system twice (> 30 days between assessments) based on operation records to validate SOF system. RESULTS Overall agreement (among all six observers at the initial assessment) on the anterior and posterior osteotomy was ICC = 0.96 and ICC = 0.91, respectively. Overall agreement (repeat observations after at least 30 days) on the anterior and posterior osteotomy was ICC = 0.96 and ICC = 0.91, respectively. This data showed that both inter- and intra-observer agreement revealed 'excellent'. CONCLUSION This study introduces the SOF system of the CSD surgery to understand the surgical sequence, the type of osteotomy and the fixation techniques. The investigation of the inter- and intra-observer agreement revealed 'excellent agreement' for both anterior and posterior osteotomies. Thus, SOF system can provide a consistent description of the various CSD surgeries and its use will provide a common frame for CSD surgery and help communicate between surgeons.
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Affiliation(s)
- Jae Taek Hong
- Department of Neurosurgery, Eunpyeong St. Mary's Hospital, The Catholic University of Korea, Seoul, Korea.
| | - Heiko Koller
- Department of Neurosurgery, Technical University of Munich, Munich, Germany
| | - Kuniyoshi Abumi
- Department of Orthopedic Surgery, Sapporo Orthopedic Hospital, Sapporo, Japan
| | - Wen Yuan
- Department of Orthopedic Surgery, Changzheng Hospital, Second Military Medical University, Shanghai, China
| | - Asdrubal Falavigna
- Department of Neurosurgery, University of Caxias Do Sul, Caxias Do Sul, RS, Brazil
| | - Ho Jin Lee
- Department of Neurosurgery, St. Vincent's Hospital, The Catholic University of Korea, Suwon, Korea
| | - Jong Beom Lee
- Department of Neurosurgery, Chungbuk National University Hospital, Cheongju, Korea
| | - Jean-Charles Le Huec
- Department of Orthopedic Surgery, Bordeaux University Hospital, Bordeaux, France
| | - Jong-Hyeok Park
- Department of Neurosurgery, Incheon St. Mary's Hospital, The Catholic University of Korea, Incheon, Korea
| | - Il Sup Kim
- Department of Neurosurgery, St. Vincent's Hospital, The Catholic University of Korea, Suwon, Korea
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25
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Severe, rigid cervical kyphotic deformity associated with SAPHO syndrome successfully treated with three-stage correction surgery combined with C7 vertebral column resection: a technical case report. Spine Deform 2021; 9:285-292. [PMID: 32946068 DOI: 10.1007/s43390-020-00203-4] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/25/2020] [Accepted: 09/02/2020] [Indexed: 10/23/2022]
Abstract
STUDY DESIGN Case report. OBJECTIVES To describe the first reported use of corrective surgery combined with C7 vertebral column resection (VCR) to treat an extremely rare case of severe, rigid cervical kyphotic deformity associated with synovitis, acne, pustulosis, hyperostosis, and osteitis (SAPHO) syndrome. BACKGROUND DATA Spinal lesions reportedly occur in 32-45% in SAPHO syndrome. However, bone and joint lesions are usually repaired such that severe joint destruction is rare. Therefore, there have been few reported cases of surgical treatment for spinal lesions. METHODS A 22-year-old woman had been diagnosed with cervical kyphotic deformity associated with SAPHO syndrome. She had difficulty looking upward. On radiography, the C4-C7 vertebral bodies were fused and exhibited severe rigid kyphotic deformity. Right convex scoliosis with a Cobb angle of 22° was apparent at C5-T2, and the C2-C7 angle of kyphosis was 75°. Corrective three-stage surgery was carried out from the anterior, posterior, and anterior, with C7 VCR. RESULTS The C2-T1 angle improved to 21° and the patient was capable of looking up. At present, 2 years postoperatively, complete bony fusion has been achieved. Her cervical spine function and quality of life were markedly improved. CONCLUSION Only a very limited number of patients have a deformity sufficiently severe that VCR of cervical vertebra is required, but as this is the technique that provides the greatest multiplanar alignment correction, its choice in the present case was appropriate. LEVEL OF EVIDENCE IV.
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State-of-the-art reviews predictive modeling in adult spinal deformity: applications of advanced analytics. Spine Deform 2021; 9:1223-1239. [PMID: 34003461 PMCID: PMC8363545 DOI: 10.1007/s43390-021-00360-0] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/17/2020] [Accepted: 04/20/2021] [Indexed: 10/25/2022]
Abstract
Adult spinal deformity (ASD) is a complex and heterogeneous disease that can severely impact patients' lives. While it is clear that surgical correction can achieve significant improvement of spinopelvic parameters and quality of life measures in adults with spinal deformity, there remains a high risk of complication associated with surgical approaches to adult deformity. Over the past decade, utilization of surgical correction for ASD has increased dramatically as deformity correction techniques have become more refined and widely adopted. Along with this increase in surgical utilization, there has been a massive undertaking by spine surgeons to develop more robust models to predict postoperative outcomes in an effort to mitigate the relatively high complication rates. A large part of this revolution within spine surgery has been the gradual adoption of predictive analytics harnessing artificial intelligence through the use of machine learning algorithms. The development of predictive models to accurately prognosticate patient outcomes following ASD surgery represents a dramatic improvement over prior statistical models which are better suited for finding associations between variables than for their predictive utility. Machine learning models, which offer the ability to make more accurate and reproducible predictions, provide surgeons with a wide array of practical applications from augmenting clinical decision making to more wide-spread public health implications. The inclusion of these advanced computational techniques in spine practices will be paramount for improving the care of patients, by empowering both patients and surgeons to more specifically tailor clinical decisions to address individual health profiles and needs.
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Sivaganesan A, Smith JS, Kim HJ. Cervical Deformity: Evaluation, Classification, and Surgical Planning. Neurospine 2020; 17:833-842. [PMID: 33401860 PMCID: PMC7788408 DOI: 10.14245/ns.2040524.262] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2020] [Accepted: 10/13/2020] [Indexed: 11/21/2022] Open
Abstract
Cervical deformity is a challenging condition to treat and requires complex decision-making. Apart from a thorough history and physical examination, a thoughtful and quantitative analysis of multiple imaging modalities is critical for understanding the nature and driver of the cervical deformity. A few classification schemes have emerged, and it is now clear that dynamic films are invaluable as they capture the extension reserve that patients can use to compensate for malalignment. These classification systems can help guide surgical planning, because the various subgroups have different properties that lend themselves to specific treatment paradigms. Here we review the clinical and radiographic evaluation, classification, and surgical planning for cervical deformity.
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Affiliation(s)
| | - Justin S Smith
- Department of Neurological Surgery, University of Virginia, Charlottesville, VA, USA
| | - Han Jo Kim
- Hospital for Special Surgery, New York, NY, USA
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Texeira da Silva LEC, Khan AA, Campos de Barros AG, Krywinski FM, Cabral de Araujo Fagundes FA, de Souza E Silva FG. A novel classification and algorithmic-based management of craniovertebral junction osteoarthrosis. JOURNAL OF CRANIOVERTEBRAL JUNCTION AND SPINE 2020; 11:321-330. [PMID: 33824563 PMCID: PMC8019119 DOI: 10.4103/jcvjs.jcvjs_172_20] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2020] [Accepted: 10/16/2020] [Indexed: 11/24/2022] Open
Abstract
Introduction: The objective of this study is to propose a novel classification and algorithmic-based management plan for craniovertebral junction osteoarthrosis (CVJOA). Materials and Methods: A retrospective study was done based on prospective database of radiological studies and clinical history. Twenty symptomatic patients (12 females and 8 males) with a mean age of 54.8 years were identified with CVJOA. These patients underwent either nonsurgical treatment only or surgical intervention and had follow-up of at least 14 months. Classification of CVJOA is based on coronal deformity, rigidity, stability, and two modifiers. The main surgical procedures done in the surgical arm of these patients included C1–C2 fusion, C1–C2 facet distraction and fusion, and unilateral subaxial facet distraction, and posterior column osteotomy. Results: All the twenty patients included in this study complained of either sub-occipital or upper neck pain and had radiological evidence of CVJOA. Seven patients improved with nonsurgical management and 13 underwent surgical intervention. Surgical recommendations for each type of CVJOA have been described with case examples, and algorithm for the management of CVJOA has been developed based on this study. Interobserver agreement on CVJOA classification was measured using kappa value statistics which showed moderate strength of agreement (0.467). Conclusion: This study describes a novel classification and management of CVJOA based on algorithm and current surgical recommendations for each type of CVJOA.
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Affiliation(s)
- Luis Eduardo Carelli Texeira da Silva
- Department of Spine Surgery, National Institute of Traumatology and Orthopedics, Rio de Janeiro, Brazil.,Department of Complex and Minimal Invasive Spine Surgery, Spine Institute of Rio de Janeiro (INCOL), Rio de Janeiro, Brazil
| | - Ahsan Ali Khan
- Department of Spine Surgery, National Institute of Traumatology and Orthopedics, Rio de Janeiro, Brazil.,Department of Complex and Minimal Invasive Spine Surgery, Spine Institute of Rio de Janeiro (INCOL), Rio de Janeiro, Brazil
| | | | - Fernando Miguel Krywinski
- Department of Spine Surgery, National Institute of Traumatology and Orthopedics, Rio de Janeiro, Brazil.,Department of Complex and Minimal Invasive Spine Surgery, Spine Institute of Rio de Janeiro (INCOL), Rio de Janeiro, Brazil
| | | | - Felipe Gomes de Souza E Silva
- Department of Complex and Minimal Invasive Spine Surgery, Spine Institute of Rio de Janeiro (INCOL), Rio de Janeiro, Brazil
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Joshi RS, Lau D, Haddad AF, Deviren V, Ames CP. Risk factors for determining length of intensive care unit and hospital stays following correction of cervical deformity: evaluation of early severe adverse events. J Neurosurg Spine 2020; 34:178-189. [PMID: 33096532 DOI: 10.3171/2020.6.spine20826] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2020] [Accepted: 06/12/2020] [Indexed: 11/06/2022]
Abstract
OBJECTIVE Correction of rigid cervical deformities can be associated with high complication rates and result in prolonged intensive care unit (ICU) and hospital stays. In this study, the authors aimed to examine the risk factors contributing to length of stay (LOS) in both the hospital and ICU following adult cervical deformity (ACD) surgery and to identify severe adverse events that occurred in this setting. METHODS A retrospective review of ACD patients who underwent posterior-based osteotomies for deformity correction from 2010 to 2019 was performed. Inclusion criteria were cervical kyphosis > 20° and/or cervical sagittal vertical axis (cSVA) > 4 cm. Multivariate analysis was used to identify risk factors independently associated with ICU and hospital LOS. RESULTS A total of 107 patients were included. The mean age was 63.5 years, and 61.7% were female. Over half (52.3%) underwent 3-column osteotomies, while 47.7% underwent posterior column osteotomies. There was significant correction of all cervical parameters: cSVA (6.0 vs 3.6 cm, p < 0.001), cervical lordosis (8.2° vs -5.3°, p < 0.001), cervical scoliosis (6.5° vs 2.2°, p < 0.001), and T1-slope (40.2° vs 34.5°, p < 0.001). There were also reciprocal changes to the distal spine: thoracic kyphosis (54.4° vs 46.4°, p < 0.001), lumbar lordosis (49.9° vs 45.8°, p = 0.003), and thoracolumbar scoliosis (13.9° vs 11.1°, p = 0.009). Overall, 4 patients (3.7%) suffered aspiration-related complications, 3 patients (2.8%) experienced dysphagia requiring a feeding tube, and 4 patients (3.7%) had compromised airways, with 1 resulting in death. The mean ICU and hospital LOS were 2.8 days and 7.9 days, respectively. Multivariate analysis identified three factors independently associated with longer ICU LOS: female sex (3.0 vs 2.4 days, p = 0.004), ≥ 12 segments fused (3.5 vs 1.9 days, p = 0.002), and postoperative complication (4.0 vs 1.9 days, p = 0.017). These same factors were independently associated with longer hospital LOS as well: female sex (8.3 vs 7.3 days, p = 0.013), ≥ 12 segments fused (9.4 vs 6.2 days, p = 0.001), and complication (9.7 vs 6.7 days, p = 0.026). CONCLUSIONS Posterior-based osteotomies are very effective for the correction of ACD, but postoperative hospital stays are relatively longer than those following surgery for degenerative disease. Risk factors for prolonged ICU and hospital LOS consist of both nonmodifiable (female sex) and modifiable (≥ 12 segments fused and presence of complication) risk factors. Additional multicenter prospective studies will be needed to validate these findings.
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Affiliation(s)
| | | | | | - Vedat Deviren
- 2Orthopedic Surgery, University of California, San Francisco, California
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Hong JT, Koller H, Abumi K, Yuan W, Falavigna A, Lee HJ, Lee JB, Le Huec JC, Park JH, Kim IS. SOF System; A New Nomenclature System for the Surgical Techniques of Cervical Spine Deformity. Neurospine 2020; 17:505-512. [PMID: 33022155 PMCID: PMC7538365 DOI: 10.14245/ns.2040472.236] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2020] [Accepted: 08/25/2020] [Indexed: 12/05/2022] Open
Abstract
Although cervical spinal deformity (CSD) can have a profoundly negative impact on an individual’s quality of life and there have been many advances in surgical treatment of CSD in recent years, there exists no comprehensive classification system of surgical treatment that categorizes anterior and posterior surgery separately according to the grade of surgery. The objective of this study is to introduce the new classification system of various surgical treatments for CSD. We developed a new classification system (SOF system) for CSD surgery that describes the sequence of surgical approach (S), the grade of osteotomy (O), and the information of fixation (F) using alphanumeric codes. This new classification system can provide a consistent description of the various osteotomies performed in CSD surgery. Especially, regarding research, there has been a clear benefit to this classification. Having a standardized classification that allows for common frame for cervical deformity correction surgery, communication between surgeons and the evaluation of the CSD surgeries make it possible to conduct global comparative research about surgical outcome.
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Affiliation(s)
- Jae Taek Hong
- Department of Neurosurgery, Eunpyeong St. Mary's Hospital, The Catholic University of Korea, Seoul, Korea
| | - Heiko Koller
- Department of Neurosurgery, Technical University of Munich, Munich, Germany
| | - Kuniyoshi Abumi
- Department of Orthopedic Surgery, Sapporo Orthopedic Hospital, Sapporo, Japan
| | - Wen Yuan
- Department of Orthopedic Surgery, Changzheng Hospital, Second Military Medical University, Shanghai, China
| | - Asdrubal Falavigna
- Department of Neurosurgery, University of Caxias do Sul, Caxias do Sul, RS, Brazil
| | - Ho Jin Lee
- Department of Neurosurgery, St. Vincent's Hospital, The Catholic University of Korea, Suwon, Korea
| | - Jong Beom Lee
- Department of Neurosurgery, Chungbuk National University Hospital, Cheongju, Korea
| | - Jean-Charles Le Huec
- Department of Orthopedic Surgery, Bordeaux University Hospital, Bordeaux, France
| | - Jong Hyuk Park
- Department of Neurosurgery, Incheon St. Mary's Hospital, The Catholic University of Korea, Incheon, Korea
| | - Il Sup Kim
- Department of Neurosurgery, St. Vincent's Hospital, The Catholic University of Korea, Suwon, Korea
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Lau D, Ames CP. Three-Column Osteotomy for the Treatment of Rigid Cervical Deformity. Neurospine 2020; 17:525-533. [PMID: 33022157 PMCID: PMC7538345 DOI: 10.14245/ns.2040466.233] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2020] [Accepted: 09/02/2020] [Indexed: 11/19/2022] Open
Abstract
Adult cervical deformity (ACD) has been shown to have a substantial impact on quality of life and overall health, with moderate to severe deformities resulting in significant disability and dysfunction. Fortunately, surgical management and correction of cervical sagittal imbalance can offer significant benefits and improvement in pain and disability. ACD is a heterogenous disease and specific surgical correction strategies should reflect deformity type (driver of deformity) and patient-related factors. Spinal rigidity is one of the most important considerations as soft tissue releases and osteotomies play a crucial role in cervical deformity correction. For ankylosed, fixed, and severe deformity, 3-column osteotomy (3CO) is often warranted. A 3CO can be done through combined anteriorposterior (vertebral body resection) and posterior-only approaches (open or closed wedge pedicle subtraction osteotomies [PSOs]). This article reviews the literature for currently published studies that report results on the use of 3CO for ACD, with a special concentration on posterior based 3CO (open and closed wedge PSO). More specifically, this review discusses the indications, radiographic corrective ability, and associated complications.
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Affiliation(s)
- Darryl Lau
- Department of Orthopedic Surgery, Shriners Hospital for Children Philadelphia, Philadelphia, PA, USA
| | - Christopher P Ames
- Department of Neurosurgery, University of California, San Francisco, San Francisco, CA, USA
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Echt M, Mikhail C, Girdler SJ, Cho SK. Anterior Reconstruction Techniques for Cervical Spine Deformity. Neurospine 2020; 17:534-542. [PMID: 33022158 PMCID: PMC7538358 DOI: 10.14245/ns.2040380.190] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2020] [Revised: 08/05/2020] [Accepted: 08/17/2020] [Indexed: 01/07/2023] Open
Abstract
Cervical spine deformity is an uncommon yet severely debilitating condition marked by its heterogeneity. Anterior reconstruction techniques represent a familiar approach with a range of invasiveness and correction potential-including global or focal realignment in the sagittal and coronal planes. Meticulous preoperative planning is required to improve or prevent neurologic deterioration and obtain satisfactory global spinal harmony. The ability to perform anterior only reconstruction requires mobility of the opposite column to achieve correction, unless a combined approach is planned. Anterior cervical discectomy and fusion has limited focal correction, but when applied over multiple levels there is a cumulative effect with a correction of approximately 6° per level. Partial or complete corpectomy has the ability to correct sagittal deformity as well as decompress the spinal canal when there is anterior compression behind the vertebral body. If pathoanatomy permits, a hybrid discectomy-corpectomy construct is favored over multilevel corpectomies. The anterior cervical osteotomy with bilateral complete uncinectomy may be necessary for angular correction of fixed cervical kyphosis, and is particularly useful in the midcervical spine. A detailed understanding of the patient's local anatomy, careful attention to positioning, and avoiding long periods of retraction time will help prevent complications and iatrogenic injury.
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Affiliation(s)
- Murray Echt
- Department of Orthopedics, Icahn School of Medicine at Mount Sinai, New York, NY, USA
- Department of Neurological Surgery, Montefiore Medical Center/Albert Einstein College of Medicine, Bronx, NY, USA
| | - Christopher Mikhail
- Department of Orthopedics, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Steven J. Girdler
- Department of Orthopedics, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Samuel K. Cho
- Department of Orthopedics, Icahn School of Medicine at Mount Sinai, New York, NY, USA
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Kim KD, Panchal R, Moldavsky M, Wang W, Bucklen BS. Effects of pre-contoured and in situ contoured rods on the mechanical strength and durability of posterior cervical instrumentation: a finite-element analysis and scanning electron microscopy investigation. Spine Deform 2020; 8:569-576. [PMID: 32430793 DOI: 10.1007/s43390-020-00078-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/06/2019] [Accepted: 12/18/2019] [Indexed: 12/01/2022]
Abstract
STUDY DESIGN Finite-element analysis. OBJECTIVES Intraoperative contouring of rods is a common procedure for spine surgeons to match the native curvature of the spine, but it may lead to premature weakening of the rod. This study investigated the effect of different bending methods on rod fatigue performance. Rod failure in the cervical spine is of clinical concern, particularly when spanning the cervicothoracic region and when considering corrective osteotomies for deformity correction and global spinal alignment. METHODS Finite-element models were developed to simulate rod bending (3.5 mm D, 40 mm L) to achieve a 23° angle with 3 different bending methods: French single, multiple bending, and in situ bending. Simulations were conducted in 4 steps: rod bending, rod spring back, residual stress relaxation, and F1717 mechanical test simulation. RESULTS French single bending resulted in the highest residual stress concentrations for both titanium (TiAlV) and cobalt chrome (CoCr) at 783 MPa and 507 MPa, respectively. During F1717 test simulation, the French single bent rod had its highest tensile stress in the middle, with 917 MPa and 623 MPa, respectively, for TiAlV and CoCr, compared to in situ (580 MPa and 586 MPa for TiAlV and CoCr) and the French multiple bent rod (765 MPa and 619 MPa for TiAlV and CoCr). The computational model found that CoCr rods made the construct least prone to deformation. CONCLUSIONS French single bend with TiAlV rods put the construct at highest risk of failure. CoCr rods led to minimal physical changes in microstructure while showing evidence of flattening.
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Affiliation(s)
- Kee D Kim
- UC Davis Medical Center, UC Davis School of Medicine, 4860 Y Street, Suite 3740, Sacramento, CA, 95817, USA
| | - Ripul Panchal
- American Neurospine Institute, PLLC 4001 West 15th Street, Suite 445, Plano, TX, 75093-5845, USA
| | - Mark Moldavsky
- Musculoskeletal Education and Research Center (MERC), A Division of Globus Medical, Inc., 2560 General Armistead Avenue, Audubon, PA, 19403, USA
| | - Wenhai Wang
- Musculoskeletal Education and Research Center (MERC), A Division of Globus Medical, Inc., 2560 General Armistead Avenue, Audubon, PA, 19403, USA.
| | - Brandon S Bucklen
- Musculoskeletal Education and Research Center (MERC), A Division of Globus Medical, Inc., 2560 General Armistead Avenue, Audubon, PA, 19403, USA
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Defining an Algorithm of Treatment for Severe Cervical Deformity Using Surgeon Survey and Treatment Patterns. World Neurosurg 2020; 139:e541-e547. [DOI: 10.1016/j.wneu.2020.04.057] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2020] [Accepted: 04/08/2020] [Indexed: 11/21/2022]
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Smith JS, Buell TJ, Shaffrey CI, Kim HJ, Klineberg E, Protopsaltis T, Passias P, Mundis GM, Eastlack R, Deviren V, Kelly MP, Daniels AH, Gum JL, Soroceanu A, Gupta M, Burton D, Hostin R, Hart R, Lafage V, Lafage R, Schwab FJ, Bess S, Ames CP. Prospective multicenter assessment of complication rates associated with adult cervical deformity surgery in 133 patients with minimum 1-year follow-up. J Neurosurg Spine 2020; 33:588-600. [PMID: 32559746 DOI: 10.3171/2020.4.spine20213] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2020] [Accepted: 04/13/2020] [Indexed: 11/06/2022]
Abstract
OBJECTIVE Although surgical treatment can provide significant improvement of symptomatic adult cervical spine deformity (ACSD), few reports have focused on the associated complications. The objective of this study was to assess complication rates at a minimum 1-year follow-up based on a prospective multicenter series of ACSD patients treated surgically. METHODS A prospective multicenter database of consecutive operative ACSD patients was reviewed for perioperative (< 30 days), early (30-90 days), and delayed (> 90 days) complications with a minimum 1-year follow-up. Enrollment required at least 1 of the following: cervical kyphosis > 10°, cervical scoliosis > 10°, C2-7 sagittal vertical axis > 4 cm, or chin-brow vertical angle > 25°. RESULTS Of 167 patients, 133 (80%, mean age 62 years, 62% women) had a minimum 1-year follow-up (mean 1.8 years). The most common diagnoses were degenerative (45%) and iatrogenic (17%) kyphosis. Almost 40% of patients were active or past smokers, 17% had osteoporosis, and 84% had at least 1 comorbidity. The mean baseline Neck Disability Index and modified Japanese Orthopaedic Association scores were 47 and 13.6, respectively. Surgical approaches were anterior-only (18%), posterior-only (47%), and combined (35%). A total of 132 complications were reported (54 minor and 78 major), and 74 (56%) patients had at least 1 complication. The most common complications included dysphagia (11%), distal junctional kyphosis (9%), respiratory failure (6%), deep wound infection (6%), new nerve root motor deficit (5%), and new sensory deficit (5%). A total of 4 deaths occurred that were potentially related to surgery, 2 prior to 1-year follow-up (1 cardiopulmonary and 1 due to obstructive sleep apnea and narcotic use) and 2 beyond 1-year follow-up (both cardiopulmonary and associated with revision procedures). Twenty-six reoperations were performed in 23 (17%) patients, with the most common indications of deep wound infection (n = 8), DJK (n = 7), and neurological deficit (n = 6). Although anterior-only procedures had a trend toward lower overall (42%) and major (21%) complications, rates were not significantly different from posterior-only (57% and 33%, respectively) or combined (61% and 37%, respectively) approaches (p = 0.29 and p = 0.38, respectively). CONCLUSIONS This report provides benchmark rates for ACSD surgery complications at a minimum 1-year (mean 1.8 years) follow-up. The marked health and functional impact of ACSD, the frail population it affects, and the high rates of surgical complications necessitate a careful risk-benefit assessment when contemplating surgery. Collectively, these findings provide benchmarks for complication rates and may prove useful for patient counseling and efforts to improve the safety of care.
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Affiliation(s)
- Justin S Smith
- 1Department of Neurosurgery, University of Virginia Health System, Charlottesville, Virginia
| | - Thomas J Buell
- 1Department of Neurosurgery, University of Virginia Health System, Charlottesville, Virginia
| | - Christopher I Shaffrey
- Departments of2Neurosurgery and
- 3Orthopedic Surgery, Duke University, Durham, North Carolina
| | - Han Jo Kim
- 4Department of Orthopaedic Surgery, Hospital for Special Surgery, New York, New York
| | - Eric Klineberg
- 5Department of Orthopaedic Surgery, University of California Davis, Sacramento, California
| | | | - Peter Passias
- 6Department of Orthopaedic Surgery, NYU Hospital for Joint Diseases, New York, New York
| | | | | | - Vedat Deviren
- 8Department of Orthopedic Surgery, University of California, San Francisco, California
| | - Michael P Kelly
- 9Department of Orthopedic Surgery, Washington University in St. Louis, Missouri
| | - Alan H Daniels
- 10Department of Orthopedic Surgery, Brown University, Providence, Rhode Island
| | - Jeffrey L Gum
- 11Department of Orthopedic Surgery, Leatherman Spine Center, Louisville, Kentucky
| | - Alex Soroceanu
- 12Department of Orthopedic Surgery, University of Calgary, Alberta, Canada
| | - Munish Gupta
- 9Department of Orthopedic Surgery, Washington University in St. Louis, Missouri
| | - Doug Burton
- 13Department of Orthopaedic Surgery, University of Kansas Medical Center, Kansas City, Kansas
| | - Richard Hostin
- 14Department of Orthopaedic Surgery, Baylor Scoliosis Center, Plano, Texas
| | - Robert Hart
- 15Department of Orthopaedic Surgery, Swedish Medical Center, Seattle, Washington
| | - Virginie Lafage
- 4Department of Orthopaedic Surgery, Hospital for Special Surgery, New York, New York
| | - Renaud Lafage
- 4Department of Orthopaedic Surgery, Hospital for Special Surgery, New York, New York
| | - Frank J Schwab
- 4Department of Orthopaedic Surgery, Hospital for Special Surgery, New York, New York
| | - Shay Bess
- 16Presbyterian St. Luke's Medical Center, Denver, Colorado; and
| | - Christopher P Ames
- 17Department of Neurological Surgery, University of California, San Francisco, California
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Lau D, Deviren V, Joshi RS, Ames CP. Comparison of perioperative complications following posterior column osteotomy versus posterior-based 3-column osteotomy for correction of rigid cervicothoracic deformity: a single-surgeon series of 95 consecutive cases. J Neurosurg Spine 2020; 33:297-306. [PMID: 32384278 DOI: 10.3171/2020.3.spine191330] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2019] [Accepted: 03/06/2020] [Indexed: 11/06/2022]
Abstract
OBJECTIVE The correction of severe cervicothoracic sagittal deformities can be very challenging and can be associated with significant morbidity. Often, soft-tissue releases and osteotomies are warranted to achieve the desired correction. There is a paucity of studies that examine the difference in morbidity and complication profiles for Smith-Petersen osteotomy (SPO) versus 3-column osteotomy (3CO) for cervical deformity correction. METHODS A retrospective comparison of complication profiles between posterior-based SPO (Ames grade 2 SPO) and 3CO (Ames grade 5 opening wedge osteotomy and Ames grade 6 closing wedge osteotomy) was performed by examining a single-surgeon experience from 2011 to 2018. Patients of interest were individuals who had a cervical sagittal vertical axis (cSVA) > 4 cm and/or cervical kyphosis > 20° and who underwent corrective surgery for cervical deformity. Multivariate analysis was utilized. RESULTS A total of 95 patients were included: 49 who underwent 3CO and 46 who underwent SPO. Twelve of the SPO patients underwent an anterior release procedure. The patients' mean age was 63.2 years, and 60.0% of the patients were female. All preoperative radiographic parameters showed significant correction postoperatively: cSVA (6.2 cm vs 4.5 cm [preoperative vs postoperative values], p < 0.001), cervical lordosis (6.8° [kyphosis] vs -7.5°, p < 0.001), and T1 slope (40.9° and 35.2°, p = 0.026). The overall complication rate was 37.9%, and postoperative neurological deficits were seen in 16.8% of patients. The surgical and medical complication rates were 17.9% and 23.2%, respectively. Overall, complication rates were higher in patients who underwent 3CO compared to those who underwent SPO, but this was not statistically significant (total complication rate 42.9% vs 32.6%, p = 0.304; surgical complication rate 18.4% vs 10.9%, p = 0.303; and new neurological deficit rate 20.4% vs 13.0%, p = 0.338). Medical complication rates were similar between the two groups (22.4% [3CO] vs 23.9% [SPO], p = 0.866). Independent risk factors for surgical complications included male sex (OR 10.88, p = 0.014), cSVA > 8 cm (OR 10.36, p = 0.037), and kyphosis > 20° (OR 9.48, p = 0.005). Combined anterior-posterior surgery was independently associated with higher odds of medical complications (OR 10.30, p = 0.011), and preoperative kyphosis > 20° was an independent risk factor for neurological deficits (OR 2.08, p = 0.011). CONCLUSIONS There was no significant difference in complication rates between 3CO and SPO for cervicothoracic deformity correction, but absolute surgical and neurological complication rates for 3CO were higher. A preoperative cSVA > 8 cm was a risk factor for surgical complications, and kyphosis > 20° was a risk factor for both surgical and neurological complications. Additional studies are warranted on this topic.
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Affiliation(s)
| | - Vedat Deviren
- 2Orthopedic Surgery, University of California, San Francisco, California
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Safaee MM, Tan LA, Riew KD. Anterior osteotomy for rigid cervical deformity correction. JOURNAL OF SPINE SURGERY 2020; 6:210-216. [PMID: 32309659 DOI: 10.21037/jss.2019.12.10] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Rigid deformities of the cervical spine can be associated with significant pain, disability, and impaired quality of life. Historical treatments generally utilized posterior approaches including the opening wedge osteotomy and pedicle subtraction osteotomy (PSO). Translation can occur during osteoclasis of the opening wedge osteotomy, making it inherently less stable than a PSO. The PSO is limited to lower cervical or upper thoracic levels due to the vertebral artery and sensitivity of cervical nerve roots to compression during osteotomy closure. The anterior osteotomy, defined as an osteotomy through the cervical disc space and uncovertebral joints back to the level of the transverse foramen bilaterally, is a powerful correction technique that can be applied throughout the cervical spine. It can also be used to correct deformities in the coronal plane. This review will summarize the technical nuances of the anterior osteotomy including patient selection, preoperative planning, and surgical technique.
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Affiliation(s)
- Michael M Safaee
- Department of Neurological Surgery, University of California, San Francisco, San Francisco, CA, USA
| | - Lee A Tan
- Department of Neurological Surgery, University of California, San Francisco, San Francisco, CA, USA
| | - K Daniel Riew
- Department of Orthopedic Surgery, New York-Presbyterian Och Spine Hospital, Columbia University, New York, NY, USA
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Safaee MM, Tan LA, Ames CP. Posterior osteotomy techniques for rigid cervical deformity correction. JOURNAL OF SPINE SURGERY 2020; 6:274-279. [PMID: 32309665 DOI: 10.21037/jss.2020.01.07] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Posterior cervical osteotomies are powerful techniques for the correction of rigid cervical deformity. These include a variety of subtypes including partial facet joint resection, complete facet joint resection, opening wedge osteotomy (OWO), and closing wedge osteotomy (CWO). The partial facet joint resection provides limited lordosis but can be applied across multiple levels and provides bony surface for fusion. Complete facet joint resection can also be performed across multiple segments for a cumulative effect and like the partial facet joint resection requires mobility of the anterior column. The OWO is traditionally performed at C7 and involves complete a complete laminectomy, facetectomy, and pediculectomy with special care to fully decompress the C8 nerve roots prior to osteotomy closure. The osteotomy utilizes a fulcrum of rotation in the middle column with shortening of the posterior column and lengthening of the anterior column with an osteoclastic fracture that must be performed with significant care. The CWO is similar to an OWO with the addition of an osteotomy into the vertebral body that is closed like a pedicle subtraction osteotomy (PSO). The goal of this review article is to summarize posterior osteotomy techniques for cervical deformity correction.
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Affiliation(s)
- Michael M Safaee
- Department of Neurological Surgery, University of California, San Francisco, CA, USA
| | - Lee A Tan
- Department of Neurological Surgery, University of California, San Francisco, CA, USA
| | - Christopher P Ames
- Department of Neurological Surgery, University of California, San Francisco, CA, USA
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Diebo BG, Shah NV, Messina JC, Naziri Q, Post NH, Riew KD, Paulino CB. Restoration of Global Sagittal Alignment After Surgical Correction of Cervical Hyperlordosis in a Patient with Emery-Dreifuss Muscular Dystrophy: A Case Report. JBJS Case Connect 2020; 10:e0003. [PMID: 31899720 DOI: 10.2106/jbjs.cc.19.00003] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
Abstract
CASE We report a rare cervical hyperlordotic deformity in a 19-year-old woman with Emery-Dreifuss muscular dystrophy and concomitant scoliosis. After standard posterolateral instrumentation and fusion of C2-T1 and extensive soft-tissue release, her neck pain improved and unassisted maintenance of cervical alignment and horizontal gaze were preserved through an 8-year follow-up. More importantly, she exhibited reciprocal correction of compensatory global sagittal malalignment, including lumbar lordosis. CONCLUSIONS This case highlights the importance of full-spine analysis for all patients with spinal deformity to identify and differentiate primary driver(s) of deformity from compensatory mechanisms to individualize treatment toward what truly drives the patient's disability.
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Affiliation(s)
- Bassel G Diebo
- Department of Orthopaedic Surgery and Rehabilitation Medicine, State University of New York (SUNY), Downstate Medical Center, Brooklyn, New York
| | - Neil V Shah
- Department of Orthopaedic Surgery and Rehabilitation Medicine, State University of New York (SUNY), Downstate Medical Center, Brooklyn, New York
| | - James C Messina
- Department of Orthopaedic Surgery and Rehabilitation Medicine, State University of New York (SUNY), Downstate Medical Center, Brooklyn, New York
| | - Qais Naziri
- Department of Orthopaedic Surgery and Rehabilitation Medicine, State University of New York (SUNY), Downstate Medical Center, Brooklyn, New York.,Department of Orthopaedic Surgery, Cleveland Clinic Florida, Weston, Florida
| | - Nicholas H Post
- Department of Neurosurgery, Brookdale University Hospital Medical Center, Brooklyn, New York
| | - K Daniel Riew
- Department of Orthopaedic Surgery, The Daniel and Jane Och Spine Hospital at New York-Presbyterian, Columbia University Medical Center, New York, New York
| | - Carl B Paulino
- Department of Orthopaedic Surgery and Rehabilitation Medicine, State University of New York (SUNY), Downstate Medical Center, Brooklyn, New York
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Kim HJ, Virk S, Elysee J, Passias P, Ames C, Shaffrey CI, Mundis G, Protopsaltis T, Gupta M, Klineberg E, Smith JS, Burton D, Schwab F, Lafage V, Lafage R. The morphology of cervical deformities: a two-step cluster analysis to identify cervical deformity patterns. J Neurosurg Spine 2019; 32:353-359. [PMID: 31731275 DOI: 10.3171/2019.9.spine19730] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2019] [Accepted: 09/10/2019] [Indexed: 11/06/2022]
Abstract
OBJECTIVE Cervical deformity (CD) is difficult to define due to the high variability in normal cervical alignment based on postural- and thoracolumbar-driven changes to cervical alignment. The purpose of this study was to identify whether patterns of sagittal deformity could be established based on neutral and dynamic alignment, as shown on radiographs. METHODS This study is a retrospective review of a prospective, multicenter database of CD patients who underwent surgery from 2013 to 2015. Their radiographs were reviewed by 12 individuals using a consensus-based method to identify severe sagittal CD. Radiographic parameters correlating with health-related quality of life were introduced in a two-step cluster analysis (a combination of hierarchical cluster and k-means cluster) to identify patterns of sagittal deformity. A comparison of lateral and lateral extension radiographs between clusters was performed using an ANOVA in a post hoc analysis. RESULTS Overall, 75 patients were identified as having severe CD due to sagittal malalignment, and they formed the basis of this study. Their mean age was 64 years, their body mass index was 29 kg/m2, and 66% were female. There were significant correlations between focal alignment/flexibility of maximum kyphosis, cervical lordosis, and thoracic slope minus cervical lordosis (TS-CL) flexibility (r = 0.27, 0.31, and -0.36, respectively). Cluster analysis revealed 3 distinct groups based on alignment and flexibility. Group 1 (a pattern involving a flat neck with lack of compensation) had a large TS-CL mismatch despite flexibility in cervical lordosis; group 2 (a pattern involving focal deformity) had focal kyphosis between 2 adjacent levels but no large regional cervical kyphosis under the setting of a low T1 slope (T1S); and group 3 (a pattern involving a cervicothoracic deformity) had a very large T1S with a compensatory hyperlordosis of the cervical spine. CONCLUSIONS Three distinct patterns of CD were identified in this cohort: flat neck, focal deformity, and cervicothoracic deformity. One key element to understanding the difference between these groups was the alignment seen on extension radiographs. This information is a first step in developing a classification system that can guide the surgical treatment for CD and the choice of fusion level.
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Affiliation(s)
- Han Jo Kim
- 1Department of Orthopedics, Hospital for Special Surgery, New York
| | - Sohrab Virk
- 1Department of Orthopedics, Hospital for Special Surgery, New York
| | - Jonathan Elysee
- 1Department of Orthopedics, Hospital for Special Surgery, New York
| | - Peter Passias
- 2Department of Orthopedics, NYU Langone Orthopedic Hospital, New York, New York
| | - Christopher Ames
- 3Department of Neurological Surgery, UCSF School of Medicine, San Francisco, California
| | | | - Gregory Mundis
- 5San Diego Center for Spinal Disorders, La Jolla, California
| | | | - Munish Gupta
- 6Department of Orthopaedic Surgery, Washington University, St. Louis, Missouri
| | - Eric Klineberg
- 7Department of Orthopaedic Surgery, UC Davis Health, Sacramento, California
| | - Justin S Smith
- 8Department of Neurological Surgery, University of Virginia Health System, Charlottesville, Virginia; and
| | - Douglas Burton
- 9Department of Orthopedic Surgery, University of Kansas Medical Center, Kansas City, Kansas
| | - Frank Schwab
- 1Department of Orthopedics, Hospital for Special Surgery, New York
| | - Virginie Lafage
- 1Department of Orthopedics, Hospital for Special Surgery, New York
| | - Renaud Lafage
- 1Department of Orthopedics, Hospital for Special Surgery, New York
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Dru AB, Lockney DT, Vaziri S, Decker M, Polifka AJ, Fox WC, Hoh DJ. Cervical Spine Deformity Correction Techniques. Neurospine 2019; 16:470-482. [PMID: 31607079 PMCID: PMC6790735 DOI: 10.14245/ns.1938288.144] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2019] [Accepted: 09/18/2019] [Indexed: 11/19/2022] Open
Abstract
Cervical kyphotic deformity can be a debilitating condition with symptoms ranging from mechanical neck pain, radiculopathy, and myelopathy to impaired swallowing and horizontal gaze. Surgical correction of cervical kyphosis has the potential to halt progression of neurological and clinical deterioration and even restore function. There are various operative approaches and deformity correction techniques. Choosing the optimal strategy is predicated on a fundamental understanding of spine biomechanics. Preoperative characterization of cervical malalignment, assessment of deformity rigidity, and defining postoperative clinical and radiographic objectives are paramount to formulating a surgical plan that balances clinical benefit with morbidity. This review of cervical deformity treatment provides an overview of the biomechanics of cervical kyphosis, radiographic classification, algorithm-based management, surgical techniques, and current surgical outcome studies.
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Affiliation(s)
- Alexander B Dru
- Lillian S. Wells Department of Neurosurgery, University of Florida, Gainesville, FL, USA
| | - Dennis Timothy Lockney
- Lillian S. Wells Department of Neurosurgery, University of Florida, Gainesville, FL, USA
| | - Sasha Vaziri
- Lillian S. Wells Department of Neurosurgery, University of Florida, Gainesville, FL, USA
| | - Matthew Decker
- Lillian S. Wells Department of Neurosurgery, University of Florida, Gainesville, FL, USA
| | - Adam J Polifka
- Lillian S. Wells Department of Neurosurgery, University of Florida, Gainesville, FL, USA
| | - W Christopher Fox
- Lillian S. Wells Department of Neurosurgery, University of Florida, Gainesville, FL, USA
| | - Daniel J Hoh
- Lillian S. Wells Department of Neurosurgery, University of Florida, Gainesville, FL, USA
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Smith JS, Shaffrey CI, Kim HJ, Passias P, Protopsaltis T, Lafage R, Mundis GM, Klineberg E, Lafage V, Schwab FJ, Scheer JK, Miller E, Kelly M, Hamilton DK, Gupta M, Deviren V, Hostin R, Albert T, Riew KD, Hart R, Burton D, Bess S, Ames CP. Prospective Multicenter Assessment of All-Cause Mortality Following Surgery for Adult Cervical Deformity. Neurosurgery 2019; 83:1277-1285. [PMID: 29351637 DOI: 10.1093/neuros/nyx605] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2017] [Accepted: 11/30/2017] [Indexed: 11/13/2022] Open
Abstract
BACKGROUND Surgical treatments for adult cervical spinal deformity (ACSD) are often complex and have high complication rates. OBJECTIVE To assess all-cause mortality following ACSD surgery. METHODS ACSD patients presenting for surgical treatment were identified from a prospectively collected multicenter database. Clinical and surgical parameters and all-cause mortality were assessed. RESULTS Of 123 ACSD patients, 120 (98%) had complete baseline data (mean age, 60.6 yr). The mean number of comorbidities per patient was 1.80, and 80% had at least 1 comorbidity. Surgical approaches included anterior only (15.8%), posterior only (50.0%), and combined anterior/posterior (34.2%). The mean number of vertebral levels fused was 8.0 (standard deviation [SD] = 4.5), and 23.3% had a 3-column osteotomy. Death was reported for 11 (9.2%) patients at a mean of 1.1 yr (SD = 0.76 yr; range = 7 d to 2 yr). Mean follow-up for living patients was 1.2 yr (SD = 0.64 yr). Causes of death included myocardial infarction (n = 2), pneumonia/cardiopulmonary failure (n = 2), sepsis (n = 1), obstructive sleep apnea/narcotics (n = 1), subsequently diagnosed amyotrophic lateral sclerosis (n = 1), burn injury related to home supplemental oxygen (n = 1), and unknown (n = 3). Deceased patients did not significantly differ from alive patients based on demographic, clinical, or surgical parameters assessed, except for a higher major complication rate (excluding mortality; 63.6% vs 22.0%, P = .006). CONCLUSION All-cause mortality at a mean of 1.2 yr following surgery for ACSD was 9.2% in this prospective multicenter series. Causes of death were reflective of the overall high level of comorbidities. These findings may prove useful for treatment decision making and patient counseling in the context of the substantial impact of ACSD.
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Affiliation(s)
- Justin S Smith
- Department of Neurosurgery, University of Virginia, Charlottesville, Virginia
| | | | - Han Jo Kim
- Department of Orthopaedic Surgery, Hospital for Special Surgery, New York, New York
| | - Peter Passias
- Department of Orthopaedic Surgery, NYU Hospital for Joint Diseases, New York, New York
| | | | - Renaud Lafage
- Department of Orthopaedic Surgery, Hospital for Special Surgery, New York, New York
| | | | - Eric Klineberg
- Department of Orthopaedic Surgery, University of California, Davis, Sacramento, California
| | - Virginie Lafage
- Department of Orthopaedic Surgery, Hospital for Special Surgery, New York, New York
| | - Frank J Schwab
- Department of Orthopaedic Surgery, Hospital for Special Surgery, New York, New York
| | - Justin K Scheer
- Department of Neurosurgery, University of Illinois at Chicago, Chicago, Illinois
| | - Emily Miller
- Stanford Physical Medicine and Rehabilitation, Redwood City, California
| | - Michael Kelly
- Department of Orthopedic Surgery, Washington University, St Louis, Missouri
| | - D Kojo Hamilton
- Department of Neurosurgery, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania
| | - Munish Gupta
- Department of Orthopedic Surgery, Washington University, St Louis, Missouri
| | - Vedat Deviren
- Department of Orthopedic Surgery, University of California, San Francisco, San Francisco, California
| | - Richard Hostin
- Department of Orthopaedic Surgery, Baylor Scoliosis Center, Plano, Texas
| | - Todd Albert
- Department of Orthopaedic Surgery, Hospital for Special Surgery, New York, New York
| | - K Daniel Riew
- Department of Orthopaedic Surgery, Columbia University, New York City, New York
| | - Robert Hart
- Department of Orthopaedic Surgery, Swedish Medical Center, Seattle, Washington
| | - Doug Burton
- Department of Orthopaedic Surgery, University of Kansas Medical Center, Kansas City, Kansas
| | - Shay Bess
- Presbyterian St Lukes Medical Center, Denver, Colorado
| | - Christopher P Ames
- Department of Neurological Surgery, University of California, San Francisco, San Francisco, California
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Segar AH, Riccio A, Smith M, Protopsaltis TS. Total uncinectomy of the cervical spine with an osteotome: technical note and intraoperative video. J Neurosurg Spine 2019; 31:831-834. [PMID: 31443083 DOI: 10.3171/2019.6.spine19332] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2019] [Accepted: 06/05/2019] [Indexed: 11/06/2022]
Abstract
Total uncinate process resection or uncinectomy is often required in the setting of severe foraminal stenosis or cervical kyphosis correction. The proximity of the uncus to the vertebral artery, nerve root, and spinal cord makes this a challenging undertaking. Use of a high-speed burr or ultrasonic bone dissector can be associated with direct injury to the vertebral artery and thermal injury to the surrounding structures. The use of an osteotome is a safe and efficient method of uncinectomy. Here the authors describe their technique, which is illustrated with an intraoperative video.
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Affiliation(s)
- Anand H Segar
- 1Department of Orthopedic Surgery, NYU Langone Orthopedic Hospital, NYU Langone Health; and
| | - Alexander Riccio
- 1Department of Orthopedic Surgery, NYU Langone Orthopedic Hospital, NYU Langone Health; and
| | - Michael Smith
- 2Department of Neurosurgery, NYU Langone Medical Center, NYU Langone Health, New York, New York
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Tundo F, Avila MJ, Willard L, Fanous S, Curri C, Hussain I, Baaj AA. Spinal alignment, surgery, and outcomes in cervical deformity: A practical guide to aid the spine surgeon. Clin Neurol Neurosurg 2019; 185:105496. [PMID: 31473432 DOI: 10.1016/j.clineuro.2019.105496] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2019] [Revised: 08/04/2019] [Accepted: 08/17/2019] [Indexed: 12/20/2022]
Abstract
Compared to the thoracolumbar spine, the literature on cervical spine alignment is scarce. While a consistent number of articles have been published, few analyze the ideal surgical approaches for each type of deformity and the optimal amount of correction to achieve. This paper provides a comprehensive review of current literature on cervical spinal deformities (with or without myelopathy) and their surgical management; it is our goal to create a framework on which surgical planning can be made. A general assessment of the actually utilized parameters and correlation between the cervical and thoracolumbar spine alignment is presented. Moreover, we provide an analysis of cervical surgical approaches (anterior, posterior, or combined), techniques (laminoplasty, laminectomy and fusion, anterior cervical discectomy and fusion, corpectomy), and their indications. Finally, a complete evaluation of outcomes and postoperative health-related quality of life (HRQOL) measures based on questionnaires (NDI, VAS, SF-36, mJOA) is discussed. Several prospective studies would be useful in understanding how cervical alignment may be important in the assessment and treatment of cervical deformities with or without myelopathy. In particular, future works should concentrate on the correlation between cervical alignment parameters, disability scores, and myelopathy outcomes. We propose, via comprehensive literature review, a guide of practical key points on surgical techniques, cervical alignment, and symptom improvement goals surgeons should aim to achieve for each patient.
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Affiliation(s)
- Frederico Tundo
- Department of Orthopaedic and Locomotor Diseases, Policlinico Umberto I Hospital, Sapienza University of Rome, Rome, Italy
| | - Mauricio J Avila
- Division of Neurosurgery, University of Arizona, Tucson, AZ, USA
| | - Laura Willard
- Department of Orthopedics, Bambino Gesù Children's Hospital, Rome, Italy
| | - Sandra Fanous
- Department of Orthopedics, Bambino Gesù Children's Hospital, Rome, Italy
| | - Cloe Curri
- University of South Florida Morsani College of Medicine, Tampa, FL, USA
| | - Ibrahim Hussain
- Department of Neurological Surgery, Weill Cornell Medical College, New York-Presbyterian Hospital, New York, NY, USA
| | - Ali A Baaj
- Department of Neurological Surgery, Weill Cornell Medical College, New York-Presbyterian Hospital, New York, NY, USA.
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Zaldivar-Jolissaint JF, Bobinski L, Duff JM. Multilevel Pedicular Osteotomies for En Bloc Resection of a Primary Ewing Sarcoma of the Subaxial Cervical Spine with Pedicle Screw Reconstruction. World Neurosurg 2019; 132:303-308. [PMID: 31394361 DOI: 10.1016/j.wneu.2019.07.208] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2019] [Accepted: 07/28/2019] [Indexed: 11/19/2022]
Abstract
BACKGROUND Primary Ewing sarcoma of the mobile spine is a rare disease. Its management requires careful surgical planning, because radical, margin-free excision is directly correlated with prognosis. Extensive bone removal in the cervical spine can lead to instability and cause postoperative iatrogenic cervical deformity. Thus, spinal instrumentation plays an important role in restoring postresection spinal stability and improving quality of life. METHODS We present a novel technique that allows successful removal of a large Ewing sarcoma of the subaxial cervical spine, infiltrating and traversing the posterior bone elements, and extending into the paraspinal muscles. This technique involves radical en bloc resection of posteriorly located cervical tumors via multilevel pediculotomy, with terminal vertebrae pedicle screw reconstruction. RESULTS Terminal vertebrae cervical pedicle screw reconstruction allowed wide surgical excision with satisfactory oncologic and mechanical results. CONCLUSIONS This technique enables 1-stage total tumor resection and stabilization and may be a viable alternative to radical en bloc resection of posteriorly located epidural malignant lesions of the cervical spine in selected cases.
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Affiliation(s)
| | - Lukas Bobinski
- Spine Unit, Department of Orthopedic Surgery, University Hospital of Umea, Umea, Sweden
| | - John Michael Duff
- Neurosurgery Department, Clinique de Genolier, Genolier, Switzerland
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Abstract
Cervical spine deformity represents a broad spectrum of pathologies that are both complex in etiology and debilitating towards quality of life for patients. Despite advances in the understanding of drivers and outcomes of cervical spine deformity, only one classification system and one system of nomenclature for osteotomy techniques currently exist. Moreover, there is a lack of standardization regarding the indications for each technique. This article reviews the adult cervical deformity (ACD) and current classification and nomenclature for osteotomy techniques, highlighting the need for further work to develop a unified approach for each case and improve communication amongst the spine community with respect to ACD.
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Smith JS, Shaffrey CI, Kim HJ, Passias P, Protopsaltis T, Lafage R, Mundis GM, Klineberg E, Lafage V, Schwab FJ, Scheer JK, Kelly M, Hamilton DK, Gupta M, Deviren V, Hostin R, Albert T, Riew KD, Hart R, Burton D, Bess S, Ames CP. Comparison of Best Versus Worst Clinical Outcomes for Adult Cervical Deformity Surgery. Global Spine J 2019; 9:303-314. [PMID: 31192099 PMCID: PMC6542159 DOI: 10.1177/2192568218794164] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
STUDY DESIGN Retrospective cohort study. OBJECTIVE Factors that predict outcomes for adult cervical spine deformity (ACSD) have not been well defined. To compare ACSD patients with best versus worst outcomes. METHODS This study was based on a prospective, multicenter observational ACSD cohort. Best versus worst outcomes were compared based on Neck Disability Index (NDI), Neck Pain Numeric Rating Scale (NP-NRS), and modified Japanese Orthopaedic Association (mJOA) scores. RESULTS Of 111 patients, 80 (72%) had minimum 1-year follow-up. For NDI, compared with best outcome patients (n = 28), worst outcome patients (n = 32) were more likely to have had a major complication (P = .004) and to have undergone a posterior-only procedure (P = .039), had greater Charlson Comorbidity Index (P = .009), and had worse postoperative C7-S1 sagittal vertical axis (SVA; P = .027). For NP-NRS, compared with best outcome patients (n = 26), worst outcome patients (n = 18) were younger (P = .045), had worse baseline NP-NRS (P = .034), and were more likely to have had a minor complication (P = .030). For the mJOA, compared with best outcome patients (n = 16), worst outcome patients (n = 18) were more likely to have had a major complication (P = .007) and to have a better baseline mJOA (P = .030). Multivariate models for NDI included posterior-only surgery (P = .006), major complication (P = .002), and postoperative C7-S1 SVA (P = .012); models for NP-NRS included baseline NP-NRS (P = .009), age (P = .017), and posterior-only surgery (P = .038); and models for mJOA included major complication (P = .008). CONCLUSIONS Factors distinguishing best and worst ACSD surgery outcomes included patient, surgical, and radiographic factors. These findings suggest areas that may warrant greater awareness to optimize patient counseling and outcomes.
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Affiliation(s)
- Justin S. Smith
- University of Virginia, Charlottesville, VA, USA,Justin S. Smith, Department of Neurosurgery, University of Virginia Health Sciences Center, PO Box 800212, Charlottesville, VA 22908, USA.
| | | | - Han Jo Kim
- Hospital for Special Surgery, New York, NY, USA
| | | | | | | | | | | | | | | | | | | | | | | | - Vedat Deviren
- University of California, San Francisco, San Francisco, CA, USA
| | | | - Todd Albert
- Hospital for Special Surgery, New York, NY, USA
| | | | | | - Doug Burton
- University of Kansas Medical Center, Kansas City, KA, USA
| | - Shay Bess
- Presbyterian St Lukes Medical Center, Denver, CO, USA
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Marcon RM, Ono AHDA, Zelada FGB, Cristante AF, Barros Filho TEP. SURGICAL CORRECTION OF SEVERE AND FIXED CHIN-ON-CHEST DEFORMITY. ACTA ORTOPEDICA BRASILEIRA 2019; 26:415-417. [PMID: 30774518 PMCID: PMC6362680 DOI: 10.1590/1413-785220182606169271] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Objective: To describe a successful surgical treatment for the challenging severe and fixed chin-on-chest deformity due to isolated neck extensor myopathy (INEM). Background data: INEM is an idiopathic cause of dropped head syndrome (DHS) that results in severe cervicothoracic kyphosis, defined as chin-on-chest deformity. The existing literature on surgical management is limited, with outcomes ranging from poor to excellent. INEM may present to the spinal surgeon for consideration of surgical management. Methods: The authors present a technique that uses a staged posterior and anterior approach combined with osteotomies and corpectomy to correct the severe and fixed deformity. A state of the art anterior and posterior instrumentation system was used. Results: At the three-months follow-up, there was good deformity correction and the patient's satisfaction was high, with no neurological deterioration occurring. Conclusions: The technique illustrated in this study represents a successful option to treat this debilitating deformity. More evidence is needed to set up a definitive algorithm for the management of this condition. Level of evidence IV, Case Report.
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Krafft PR, Mosley YI, Alikhani P. Zero-profile Hyperlordotic Spacer for Cervical Deformity Correction: Case Presentation and Technical Note. Cureus 2019; 11:e4097. [PMID: 31032157 PMCID: PMC6472715 DOI: 10.7759/cureus.4097] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
Abstract
Cervical spine deformity (CSD) can negatively affect the health-related quality of life (HRQOL) of patients, particularly the elderly, thus representing a socioeconomic problem of increasing importance. While surgical deformity correction has been linked to improved HRQOL, no universally accepted consensus exists for the operative management of CSD. The authors demonstrate the feasibility of CSD correction, implementing anterior and posterior cervical osteotomies combined with the placement of multiple consecutive zero-profile hyperlordotic interbody spacers in a 55-year-old male with cervical kyphosis. This technique resulted in the satisfactory restoration of the patient’s cervical alignment and significantly ameliorated his presenting symptoms. The patient demonstrated maintained cervical lordosis and he remained symptom-free at the one-year follow-up. The use of multiple consecutive zero-profile cervical interbody spacers can effectively and safely be utilized for the treatment of CSD. Further studies are needed to compare this technique with other standard surgeries used for CSD correction.
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Affiliation(s)
- Paul R Krafft
- Neurological Surgery, University of South Florida, Tampa, USA
| | - Yusef I Mosley
- Neurological Surgery, Saint Luke's Hospital, Kansas City, USA
| | - Puya Alikhani
- Neurological Surgery, University of South Florida, Tampa, USA
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Kinematic characteristics of patients with cervical imbalance: a weight-bearing dynamic MRI study. EUROPEAN SPINE JOURNAL : OFFICIAL PUBLICATION OF THE EUROPEAN SPINE SOCIETY, THE EUROPEAN SPINAL DEFORMITY SOCIETY, AND THE EUROPEAN SECTION OF THE CERVICAL SPINE RESEARCH SOCIETY 2019; 28:1200-1208. [PMID: 30623250 DOI: 10.1007/s00586-018-05874-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/05/2018] [Revised: 12/17/2018] [Accepted: 12/27/2018] [Indexed: 10/27/2022]
Abstract
STUDY DESIGN It is a retrospective analysis of 1806 consecutive cervical magnetic resonance images taken in weight-bearing flexion, neutral, and extension positions. OBJECTIVE The aim was to identify the kinematic characteristics of patients with cervical imbalance. Additionally, factors were analysed in the neutral position that could predict the characteristics. Little is known about the kinematic characteristics during cervical flexion and extension positions of the patient with cervical imbalance (cervical sagittal vertical axis (cSVA) in neutral position ≥ 40 mm). METHODS After evaluating the whole images, cervical imbalance group (cSVA ≥ 40 mm, n = 43) and matched control group (< 40 mm, n = 43) were created using propensity score adjusting for age, gender, and cervical alignment. They were compared for cervical motion, changes in disc bulge, and ligamentum flavum (LF) bulge from flexion to extension. Multinomial logistic regression analysis and receiver operating characteristic curve analysis were calculated to verify the predictive factors and cut-off value of the identified characteristics. RESULTS There were no significant differences in range of motion and the change in bulged discs. There was significant difference in the presence of LF bulge from flexion to extension (p = 0.023); the incidence of LF bulge increased sharply from neutral to extension in imbalance group, while there was linear increase in control group. The canal diameter (odds ratio = 0.61, p = 0.002) and disc height (odds ratio = 1.60, p = 0.041) showed significant relationship with the segments with LF bulge observed in extension but not in neutral position in the imbalance group; the cut-off values were 10.7 mm for canal diameter (sensitivity 82.5%, specificity 66.7%) and 7.1 mm for disc height (70.8%, 58.5%). CONCLUSION Patients with cervical imbalance had a stark increase in LF bulge from the neutral to extension position. Canal diameter < 10.7 mm and disc height > 7.1 mm on neutral images may predict the segments with LF bulge observed in extension, but not in the neutral position. LEVEL OF EVIDENCE II (Diagnostic: individual cross-sectional studies with consistently applied reference standard and blinding). These slides can be retrieved from Electronic Supplementary Material.
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